CompTIA 220-1202 A+ Certification Exam: Core 2 Dumps and Practice Test Questions Set 9 Q161-180

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Q161) A user reports that their Windows 10 laptop cannot boot after a failed cumulative update, and the system displays a black screen with a blinking cursor. Which of the following should the technician use FIRST to attempt recovery

A) Windows Recovery Environment (WinRE)
B) Device Manager
C) Disk Cleanup
D) Task Scheduler

Answer: A) Windows Recovery Environment (WinRE)

Explanation:

When a Windows 10 laptop cannot boot after a failed cumulative update and shows a black screen with a blinking cursor, the system cannot locate or properly load the boot files. The Windows Recovery Environment (WinRE) is the first tool a technician should use for recovery. WinRE is a built-in recovery environment designed to repair startup issues, restore system files, and recover the operating system without performing a full reinstall.

Option A) is correct because WinRE provides multiple recovery tools that directly address boot issues. Startup Repair automatically detects problems preventing Windows from booting, such as corrupted boot sectors, missing files, or misconfigured updates. System Restore can revert the system to a previous restore point, effectively undoing the failed update without affecting user data. The Command Prompt allows advanced troubleshooting using commands such as “bootrec /fixmbr,” “bootrec /fixboot,” “bootrec /rebuildbcd,” and “sfc /scannow” to repair corrupted system files and rebuild the boot configuration. Safe Mode provides a minimal environment for isolating driver or software conflicts.

Option B) Device Manager is not accessible on a non-booting system. It is used to manage hardware and drivers on functioning systems, so it cannot address boot failures.

Option C) Disk Cleanup removes temporary files and frees storage space, which is helpful for maintenance but does not resolve boot issues caused by failed updates or corrupted boot files.

Option D) Task Scheduler automates routine tasks but does not repair startup failures. Scheduled tasks cannot restore a system that fails to load.

The recommended process is to boot into WinRE, attempt Startup Repair first, and if that fails, use System Restore or Safe Mode for manual intervention. Using command-line tools within WinRE to repair the BCD and MBR ensures that the boot configuration is corrected. After successful recovery, technicians should verify the update history, install pending updates carefully, and consider creating system restore points to prevent recurrence. Proper use of WinRE restores system functionality while protecting user data and maintaining operational continuity.

Q162) A user reports that their Windows 10 laptop cannot print to a shared network printer, even though other users can print successfully. Which of the following should the technician check FIRST?

A) User permissions on the printer
B) Printer toner levels
C) Hard drive free space
D) BIOS version

Answer: A) User permissions on the printer

Explanation

 When a single user cannot print to a shared network printer while other users have no issues, the most likely cause is insufficient permissions. Windows manages access to shared printers through security settings that define who can print, manage printer properties, or see the printer on the network. Without appropriate permissions, the user cannot send print jobs even if the printer is functional.

Option A) is correct because verifying and adjusting user permissions addresses the primary cause. The technician should open the printer properties on the host computer or print server, navigate to the Security tab, and ensure that the affected user has the “Print” permission. If needed, the user can be added to a group with printing privileges. After updating permissions, the user may need to reconnect to the printer or restart the Print Spooler service for changes to take effect.

Option B) Printer toner levels affect print quality but do not prevent a user from sending print jobs. Low toner would result in faded output but would not explain why only one user is unable to print.

Option C) Hard drive free space affects general system performance but is unlikely to prevent access to a network printer. Only severe low storage affecting the Print Spooler could impact functionality.

Option D) BIOS version does not influence printer access. Printing permissions and network connectivity are managed by the operating system, not firmware.

After verifying permissions, the technician should also ensure that the correct printer driver is installed, network connectivity to the print server is functional, and the Print Spooler service is running. Proper management of user permissions ensures secure, reliable printing and reduces support calls while maintaining workflow efficiency.

Q163) A user reports that their Windows 10 laptop frequently displays “Low Disk Space” warnings on the C: drive. Which of the following should the technician do FIRST?

A) Delete unnecessary files and run Disk Cleanup
B) Upgrade the CPU
C) Update the graphics driver
D) Replace the RAM

Answer: A) Delete unnecessary files and run Disk Cleanup

Explanation

“Low Disk Space” warnings indicate that the system drive (usually C:) is nearly full, which can compromise system performance, prevent updates, and cause application errors. Maintaining sufficient free space is critical for Windows operations, as the system uses space for temporary files, page files, restore points, and updates.

Option A) is correct because deleting unnecessary files and using Disk Cleanup immediately frees space. Disk Cleanup removes temporary files, caches, old Windows Update files, and Recycle Bin contents. Uninstalling unused applications and moving large files to external storage or cloud services further optimizes free space. Enabling Storage Sense can automate cleanup tasks to maintain sufficient free space over time. Technicians should ensure that at least 10–15% of the system drive remains free to support ongoing operations and updates.

Option B) Upgrading the CPU increases processing speed but does not affect available storage.

Option C) Updating the graphics driver improves display performance but does not address disk space issues.

Option D) Replacing RAM increases system memory for multitasking but does not affect storage availability or low disk space warnings.

Long-term solutions may include upgrading to a larger SSD, adding a secondary storage drive, and implementing routine file archiving. Proper disk management ensures system stability, reliable updates, and efficient application performance while preventing unexpected errors or slowdowns.

Q164) A user reports that their Windows 10 laptop cannot connect to a VPN, although other devices on the same network connect successfully. Which of the following should the technician check FIRST?

A) Firewall or antivirus settings blocking VPN traffic
B) ISP service status
C) Physical Ethernet cable
D) Screen resolution

Answer: A) Firewall or antivirus settings blocking VPN traffic

Explanation:

If a VPN works on other devices but fails on a Windows 10 laptop, the problem is typically local to that device. Firewalls or antivirus programs can block VPN protocols, ports, or client applications, preventing secure connections. Local security software configuration is one of the most common causes of VPN connectivity issues affecting only a single device.

Option A) is correct because firewall or antivirus restrictions are often the cause. The technician should temporarily disable security software to test VPN connectivity. If the VPN works with security software disabled, the firewall or antivirus is blocking traffic. The technician can configure exceptions, open the necessary ports, or allow the VPN client through the firewall while maintaining security. Additionally, verifying VPN client settings, updating the software, and confirming user credentials ensures proper communication with the VPN server.

Option B) ISP service outages affect all devices on the network. Since other devices can connect successfully, the ISP is not the cause.

Option C) Physical Ethernet cables are only relevant for wired connections and do not affect VPN over Wi-Fi.

Option D) Screen resolution affects display output but does not impact VPN connectivity. Display settings are unrelated to secure network tunneling or authentication processes.

Once firewall and antivirus settings are properly configured, the technician should monitor VPN stability and logs to ensure consistent connectivity. Proper configuration ensures secure VPN access without compromising system security.

Q165) A user reports that their Windows 10 laptop battery drains rapidly, even when idle, and Task Manager shows multiple background processes consuming high CPU. Which of the following is the MOST likely cause?

A) Excessive background applications consuming CPU resources
B) Low hard drive free space
C) Disabled firewall
D) Incorrect screen resolution

Answer: A) Excessive background applications consuming CPU resources

Explanation:

Rapid battery drain during idle periods is often caused by background processes consuming significant CPU resources. Programs such as cloud sync clients, system indexing services, update agents, and other utilities can continue running without user interaction. High CPU usage increases power consumption, generates heat, and reduces battery lifespan.

Option A) is correct because identifying and managing CPU-intensive background applications resolves the issue. Task Manager can be used to identify processes consuming excessive CPU. The technician should disable unnecessary startup applications, enable Windows Battery Saver mode, and configure power plans to limit CPU activity during idle periods. Users should be educated to close resource-heavy applications when not needed.

Option B) Low hard drive free space affects system performance but does not directly cause high CPU usage or rapid battery drain.

Option C) Disabled firewall impacts network security but does not influence CPU utilization or energy consumption.

Option D) Incorrect screen resolution may impact display output but does not significantly increase CPU usage or battery consumption.

Additional measures include scheduling maintenance tasks while the laptop is plugged in, uninstalling unnecessary software, and monitoring CPU usage patterns. Proper management of background processes ensures longer battery life, reduces heat, and maintains system responsiveness during both active and idle periods.

Q166) A user reports that their Windows 10 laptop cannot boot and displays the error code “0x0000007B.” Which of the following is the MOST likely cause?

A) Boot device not accessible
B) Outdated graphics driver
C) Low hard drive free space
D) Incorrect screen resolution

Answer: A) Boot device not accessible

Explanation:

The error code “0x0000007B,” also known as INACCESSIBLE_BOOT_DEVICE, indicates that Windows cannot access the system partition during startup. This prevents the operating system from loading and is typically accompanied by a blue screen or black screen. Causes of this error include corrupted Boot Configuration Data (BCD), missing storage drivers, BIOS/UEFI misconfiguration, or physical drive failure.

Option A) is correct because inaccessible boot devices are the primary cause of this error. Common triggers include switching between IDE, AHCI, or RAID modes in BIOS/UEFI without updating drivers, corrupted boot files, damaged MBR, or a failing storage drive. To resolve the issue, the technician should boot into Windows Recovery Environment (WinRE) and attempt Startup Repair. Advanced troubleshooting includes using Command Prompt with commands like “bootrec /fixmbr,” “bootrec /fixboot,” “bootrec /scanos,” and “bootrec /rebuildbcd” to repair the boot configuration. Verifying BIOS/UEFI settings to ensure the correct boot drive is selected is critical. CHKDSK or manufacturer-specific diagnostic tools can check for physical drive failure.

Option B) Outdated graphics drivers can cause flickering or distorted display after boot, but they do not prevent Windows from accessing the boot device.

Option C) Low hard drive free space can slow the system or prevent updates, but it does not trigger a blue screen error specifically indicating boot device inaccessibility.

Option D) Incorrect screen resolution affects display output but has no effect on booting or accessing system partitions.

Once the boot device is restored and verified, Windows should load normally. Regular system backups, restore points, and maintaining drive health are crucial to prevent recurrence. Proper repair of the boot configuration ensures stability and protects user data.

Q167) A user reports that their Windows 10 laptop frequently freezes during startup, and Task Manager shows high disk usage by “Windows Modules Installer Worker.” Which of the following is the MOST likely cause?

A) Windows is installing updates
B) Malware infection
C) Failing hard drive
D) Outdated network driver

Answer: A) Windows is installing updates

Explanation:

 The “Windows Modules Installer Worker” (TiWorker.exe) is a legitimate Windows service responsible for installing, modifying, or removing system updates and optional components. High CPU or disk usage during startup is common when updates are being processed. TiWorker.exe performs tasks such as verifying file integrity, preparing updates, and conducting background servicing, which can make the system appear frozen temporarily.

Option A) is correct because high disk usage by TiWorker.exe typically occurs during legitimate update processes. Cumulative updates, feature updates, or servicing operations may consume significant resources. The technician should allow the process to complete while monitoring Task Manager or Event Viewer for progress. Scheduling updates during off-peak hours minimizes disruption. If high disk usage persists after updates, running “DISM /Online /Cleanup-Image /RestoreHealth” and “sfc /scannow” can repair corrupted system files.

Option B) Malware can cause high CPU usage, but in this case, Task Manager identifies TiWorker.exe, a legitimate system process. While a malware scan is recommended for completeness, malware is unlikely the primary cause.

Option C) A failing hard drive can slow the system, cause crashes, and lead to file errors, but it does not specifically cause high disk usage by TiWorker.exe.

Option D) An outdated network driver affects connectivity but does not trigger high CPU or disk usage related to system update processes.

Once updates complete, system performance should normalize. Administrators can manage update schedules, monitor system health, and use repair commands to maintain performance. Proper update management ensures security, stability, and optimal operation.

Q168) A user reports that their Windows 10 laptop screen flickers intermittently when opening certain applications. Which of the following is the MOST likely cause?

A) Outdated or incompatible display driver
B) Low hard drive free space
C) Incorrect screen resolution
D) Disabled firewall

Answer: A) Outdated or incompatible display driver

Explanation:

 Intermittent screen flickering is commonly caused by outdated, corrupted, or incompatible display drivers. The graphics driver serves as the interface between Windows and the GPU, translating rendering instructions from applications into visual output. Programs using hardware acceleration, DirectX, or OpenGL can expose driver incompatibilities, causing flickering, tearing, or temporary blackouts.

Option A) is correct because updating or reinstalling the graphics driver resolves driver-related issues. The technician should check Device Manager for warnings under “Display adapters,” install the latest driver from the manufacturer’s website, or roll back to a stable version if flickering began after an update. Disabling hardware acceleration in affected applications can temporarily reduce flickering. Ensuring Windows updates are applied helps maintain driver compatibility and system stability.

Option B) Low hard drive space affects system performance but does not cause dynamic visual flickering.

Option C) Incorrect screen resolution may distort images but does not produce intermittent flickering. Resolution issues are static, unlike driver-related visual anomalies.

Option D) Disabled firewall impacts network security but does not affect GPU performance or rendering.

After driver updates and application adjustments, the technician should test multiple programs and monitor GPU performance and temperature. Proper driver management ensures stable visual output, prevents disruptions, and improves the overall user experience.

Q169) A user reports that their Windows 10 laptop cannot connect to a Wi-Fi network, although other devices on the same network work properly. Which of the following should the technician check FIRST?

A) Wireless adapter driver
B) ISP service outage
C) Physical Ethernet cable
D) Screen resolution

Answer: A) Wireless adapter driver

Explanation:

When a single device cannot connect to Wi-Fi while other devices work, the problem is often specific to the device. The wireless adapter and its driver handle network scanning, authentication, and connectivity. Outdated, corrupted, or incompatible drivers can prevent successful connections even if the network functions normally.

Option A) is correct because verifying and updating the wireless adapter driver addresses the root cause. The technician should check Device Manager for issues, update the driver from the manufacturer’s website, and ensure power management settings do not disable the adapter to save energy. Testing the adapter on other networks can confirm whether the issue is device-specific.

Option B) ISP outages affect all devices. Since other devices connect successfully, the ISP is not the cause.

Option C) Physical Ethernet cables are irrelevant for Wi-Fi connectivity.

Option D) Screen resolution affects display output but has no impact on Wi-Fi connectivity.

After driver verification, the technician may reset the network stack using “netsh” commands, run Windows Network Troubleshooter, and replace the adapter if hardware failure is suspected. Proper driver and network management ensures reliable Wi-Fi connectivity and minimizes user downtime.

Q170) A user reports that their Windows 10 laptop battery drains rapidly, even when idle, and Task Manager shows multiple background processes consuming high CPU. Which of the following is the MOST likely cause?

A) Excessive background applications consuming CPU resources
B) Low hard drive free space
C) Disabled firewall
D) Incorrect screen resolution

Answer: A) Excessive background applications consuming CPU resources

Explanation:

 Rapid battery drain during idle periods is frequently caused by background processes consuming significant CPU resources. Programs such as cloud sync clients, system indexing, update agents, and maintenance utilities can continue running without user interaction. High CPU usage increases power consumption, generates heat, and reduces battery life.

Option A) is correct because identifying and managing CPU-intensive background processes resolves the issue. Task Manager can identify resource-hungry applications. The technician should disable unnecessary startup programs, enable Battery Saver mode, and configure power plans to limit CPU activity during idle times. Users should be advised to close applications when not in use.

Option B) Low hard drive space affects system performance but does not directly cause high CPU usage or battery drain.

Option C) Disabled firewall impacts network security but does not influence CPU usage or battery life.

Option D) Incorrect screen resolution affects display output but does not significantly impact CPU usage or power consumption.

Additional measures include scheduling maintenance while plugged in, uninstalling unneeded software, and monitoring CPU usage patterns. Proper management of background processes ensures longer battery life, reduced heat, and optimal system responsiveness during both active and idle periods.

Q171) A user reports that their Windows 10 laptop cannot boot after installing a Windows update and displays the message “Automatic Repair couldn’t repair your PC.” Which of the following should the technician try FIRST?

A) Windows Recovery Environment (WinRE) Startup Repair
B) Device Manager
C) Disk Cleanup
D) Task Scheduler

Answer: A) Windows Recovery Environment (WinRE) Startup Repair

Explanation:

When a Windows 10 laptop fails to boot after an update and shows “Automatic Repair couldn’t repair your PC,” the system cannot automatically resolve startup problems. In this scenario, the first tool a technician should use is Windows Recovery Environment (WinRE). WinRE provides an integrated environment for repairing startup issues, restoring the system, and recovering data without performing a full reinstall.

Option A) is correct because Startup Repair within WinRE is specifically designed to fix problems that prevent Windows from booting. Startup Repair automatically detects and attempts to resolve issues such as missing or corrupted boot files, misconfigured boot sectors, and driver-related failures. If Startup Repair cannot resolve the issue automatically, technicians can use the Command Prompt to execute commands like “bootrec /fixmbr,” “bootrec /fixboot,” “bootrec /scanos,” and “bootrec /rebuildbcd” to rebuild the Boot Configuration Data (BCD) and repair the Master Boot Record (MBR). System Restore allows rolling back the system to a restore point prior to the failed update, preserving user files while restoring system stability. Safe Mode provides a minimal environment to diagnose driver conflicts or software incompatibilities.

Option B) Device Manager is only accessible from a running operating system and cannot resolve boot failures. It is used for managing hardware and drivers but cannot repair a system that fails to start.

Option C) Disk Cleanup is designed to remove temporary files and free storage space but does not address startup or boot issues. It cannot repair corrupted system files or boot configuration errors.

Option D) Task Scheduler automates routine tasks but cannot repair a non-booting system. Scheduled tasks operate only when the system is running.

The recommended process is to boot into WinRE, attempt Startup Repair, and, if necessary, use System Restore or Command Prompt tools for advanced repairs. After recovery, technicians should verify update integrity, check system logs, and create restore points to prevent future boot failures. Proper use of WinRE ensures system stability and preserves user data while efficiently restoring functionality.

Q172) A user reports that their Windows 10 laptop cannot print to a shared network printer, although other users can print successfully. Which of the following should the technician check FIRST?

A) User permissions on the printer
B) Printer toner levels
C) Hard drive free space
D) BIOS version

Answer: A) User permissions on the printer

Explanation:

 When a single user cannot print to a shared network printer while other users can, the problem is usually due to insufficient permissions. Windows uses access control to determine who can print, manage printer properties, or view the printer on the network. If permissions are missing or misconfigured, the user cannot submit print jobs, even though the printer and network are operational.

Option A) is correct because verifying user permissions directly addresses the problem. The technician should access the printer properties on the host computer or print server, navigate to the Security tab, and confirm that the affected user has the “Print” permission. If necessary, the user can be added to a group with printing privileges. After adjusting permissions, the user may need to reconnect to the printer or restart the Print Spooler service to apply changes.

Option B) Printer toner levels affect print quality but do not prevent access. A user with low toner would still be able to send print jobs; the output would simply be faint or incomplete.

Option C) Low hard drive free space can impact overall system performance but is unlikely to prevent printing for a single user. Only extreme low storage that affects the Print Spooler could potentially block jobs.

Option D) BIOS version has no effect on printer access. Printing is controlled by the operating system and network settings, not firmware.

Once permissions are verified, the technician should also ensure that the correct driver is installed, the printer is online, and network connectivity is functional. Proper management of user permissions ensures secure and reliable printing, reducing downtime and support requests.

Q173) A user reports that their Windows 10 laptop frequently displays “Low Disk Space” warnings on the C: drive. Which of the following should the technician do FIRST?

A) Delete unnecessary files and run Disk Cleanup
B) Upgrade the CPU
C) Update the graphics driver
D) Replace the RAM

Answer: A) Delete unnecessary files and run Disk Cleanup

Explanation:

Low disk space warnings indicate that the system drive (usually C:) is nearly full. Windows requires sufficient free space for system files, page files, updates, temporary files, and restore points. Operating with limited free space can cause performance issues, failed updates, and application errors.

Option A) is correct because deleting unnecessary files and using Disk Cleanup immediately frees space. Disk Cleanup removes temporary files, system cache, old Windows Update files, and contents of the Recycle Bin. Uninstalling unused applications and moving large files to external storage or cloud storage further improves available space. Enabling Storage Sense automates cleanup tasks to maintain free space over time. The technician should ensure that at least 10–15% of the system drive remains free to support normal operations and updates.

Option B) Upgrading the CPU increases processing power but does not add storage capacity.

Option C) Updating the graphics driver improves display performance but does not address low disk space issues.

Option D) Replacing RAM increases multitasking ability but does not provide additional storage.

Long-term solutions may include upgrading to a larger SSD, adding secondary storage, or implementing archiving policies for user data. Proper disk management ensures stable performance, successful updates, and reliable operation while preventing low disk space warnings.

Q174) A user reports that their Windows 10 laptop cannot connect to a VPN, although other devices on the same network connect successfully. Which of the following should the technician check FIRST?

A) Firewall or antivirus settings blocking VPN traffic
B) ISP service status
C) Physical Ethernet cable
D) Screen resolution

Answer: A) Firewall or antivirus settings blocking VPN traffic

Explanation

If a VPN works on other devices but fails on a Windows 10 laptop, the issue is likely local to the device. Firewalls or antivirus software can block VPN protocols, ports, or client applications, preventing secure connections. These settings are a common cause of VPN connectivity problems that affect only a single machine.

Option A) is correct because firewall or antivirus restrictions often block VPN traffic. The technician should temporarily disable security software to test connectivity. If the VPN works with the firewall or antivirus disabled, the software is the cause. The technician can then configure exceptions or allow the VPN client through the firewall while maintaining security. Verifying VPN client configuration, updating software, and confirming credentials ensures proper communication with the VPN server.

Option B) ISP outages affect all devices. Since other devices connect successfully, the ISP is not the issue.

Option C) Physical Ethernet cables only affect wired connections and are irrelevant for Wi-Fi VPN connections.

Option D) Screen resolution affects display output but does not impact network connectivity or VPN functionality.

After adjusting firewall and antivirus settings, the technician should monitor VPN logs and connection stability. Proper configuration ensures secure and reliable VPN access without compromising device security.

Q175) A user reports that their Windows 10 laptop battery drains rapidly, even when idle, and Task Manager shows multiple background processes consuming high CPU. Which of the following is the MOST likely cause?

A) Excessive background applications consuming CPU resources
B) Low hard drive free space
C) Disabled firewall
D) Incorrect screen resolution

Answer: A) Excessive background applications consuming CPU resources

Explanation:

 Rapid battery drain during idle periods is frequently caused by background processes consuming significant CPU resources. Applications such as cloud synchronization clients, indexing services, update agents, and maintenance utilities can continue running without user interaction. High CPU usage generates heat, increases power consumption, and reduces battery lifespan.

Option A) is correct because managing CPU-intensive background processes resolves the issue. Task Manager can be used to identify applications consuming excessive CPU. The technician should disable unnecessary startup programs, enable Windows Battery Saver mode, and configure power plans to limit CPU activity during idle periods. Educating users to close resource-heavy applications when not needed is important for maintaining battery longevity.

Option B) Low hard drive space affects system performance but does not directly cause high CPU usage or rapid battery drain.

Option C) Disabled firewall impacts network security but does not affect CPU activity or power consumption.

Option D) Incorrect screen resolution affects display output but does not significantly increase CPU usage or battery depletion.

Additional measures include scheduling maintenance tasks while the laptop is plugged in, uninstalling unnecessary software, and monitoring CPU usage patterns. Proper background process management ensures longer battery life, reduces heat, and maintains optimal system responsiveness.

Q176) A user reports that their Windows 10 laptop cannot boot and displays the blue screen error code “0x0000007B.” Which of the following is the MOST likely cause?

A) Boot device not accessible
B) Outdated graphics driver
C) Low hard drive free space
D) Incorrect screen resolution

Answer: A) Boot device not accessible

Explanation:

The blue screen error code “0x0000007B,” also known as INACCESSIBLE_BOOT_DEVICE, is a critical error in Windows that occurs when the operating system cannot access the system partition during startup. This error prevents Windows from completing the boot process and is typically accompanied by a blue screen or, in some cases, a black screen with a blinking cursor. Understanding the root cause of this error is essential for a technician to implement the correct remediation strategy.

Option A) is correct because the system cannot access the boot device due to a misconfiguration, missing drivers, or hardware issues. Common scenarios include switching the SATA operation mode in BIOS/UEFI between IDE, AHCI, or RAID without updating drivers, corruption of the Boot Configuration Data (BCD), a failing hard drive, or a damaged Master Boot Record (MBR). To resolve this, the technician should boot the system using Windows Recovery Environment (WinRE) and utilize the Startup Repair tool to attempt automatic repairs. If that fails, the Command Prompt within WinRE can be used to execute commands such as “bootrec /fixmbr,” “bootrec /fixboot,” and “bootrec /rebuildbcd” to restore boot functionality. Additionally, verifying BIOS/UEFI settings ensures the system is attempting to boot from the correct drive using the proper interface. Tools like CHKDSK or manufacturer-specific drive diagnostics can identify physical drive failures. Ensuring all necessary storage drivers are loaded is also crucial, especially if the system has been migrated or restored from backup.

Option B) Outdated graphics drivers may result in visual artifacts, flickering, or distorted display after Windows starts, but they do not prevent access to the boot device itself. Graphics driver issues manifest after the OS has already loaded the kernel and system processes.

Option C) Low hard drive free space can slow performance and prevent updates or temporary file creation, but it does not directly lead to an inaccessible boot device error. Disk space issues manifest differently, often through slow performance, failed update installations, or application errors, rather than preventing boot entirely.

Option D) Incorrect screen resolution affects visual output but has no impact on the boot process or system partition access. Resolution-related issues are cosmetic and do not interfere with core system functionality.

After repairing the boot device issue, Windows should start normally. It is critical to create regular backups, maintain restore points, and monitor drive health to prevent future occurrences. Proper diagnosis and repair of the boot configuration not only restores system functionality but also ensures data integrity and reduces the risk of future boot failures. Technicians must systematically verify hardware, driver compatibility, and BIOS/UEFI settings to implement a robust, long-term solution.

Q177) A user reports that their Windows 10 laptop frequently freezes during startup, and Task Manager shows high CPU and disk usage by “Windows Modules Installer Worker.” Which of the following is the MOST likely cause?

A) Windows is installing updates
B) Malware infection
C) Failing hard drive
D) Outdated network driver

Answer: A) Windows is installing updates

Explanation:

 The “Windows Modules Installer Worker” (TiWorker.exe) is a legitimate system process in Windows responsible for installing, modifying, or removing updates and optional Windows components. When this process consumes high CPU and disk resources, particularly during startup, it is often perceived as the system freezing. This behavior is typically normal and occurs while Windows applies cumulative updates, feature updates, or maintenance tasks. Understanding the role of TiWorker.exe is essential for accurate troubleshooting.

Option A) is correct because Windows frequently performs background update tasks that can consume significant system resources. During this period, users may experience slow startup, lag, or temporary unresponsiveness. The technician should monitor Task Manager to confirm that the resource usage is associated with TiWorker.exe. Allowing the process to complete is often sufficient to restore normal performance. In cases where the process hangs or usage remains abnormally high, commands such as “DISM /Online /Cleanup-Image /RestoreHealth” and “sfc /scannow” can repair corrupted system files. Scheduling updates during off-peak hours and educating users about expected performance impact ensures minimal disruption.

Option B) Malware can cause high CPU or disk usage, but Task Manager identifies TiWorker.exe, a legitimate process. While a malware scan is prudent, the problem is unlikely caused by malicious software. Persistent, unexplained CPU usage by unknown processes would necessitate a malware investigation.

Option C) A failing hard drive can manifest as system slowdowns, crashes, or repeated file errors. Symptoms include unusual noises, corrupted files, or system instability across multiple processes. However, the presence of TiWorker.exe consuming high CPU specifically points to legitimate update processes rather than hardware failure.

Option D) An outdated network driver affects connectivity but does not impact CPU or disk usage related to system update operations. Network issues manifest as slow or failed connections, not system freezes caused by update processes.

Once the update process completes, performance should normalize. Technicians should ensure the system is configured for automatic updates, monitor disk health, and schedule maintenance during times that minimize user disruption. Understanding the interplay between update services and system performance allows for accurate diagnostics and prevents unnecessary hardware replacements. Proper update management ensures security, stability, and system responsiveness while avoiding user frustration.

Q178) A user reports that their Windows 10 laptop screen flickers intermittently when opening multiple applications. Which of the following is the MOST likely cause?

A) Outdated or incompatible display driver
B) Low hard drive free space
C) Incorrect screen resolution
D) Disabled firewall

Answer: A) Outdated or incompatible display driver

Explanation:

Screen flickering in Windows 10, especially when multiple applications are open or during use of applications utilizing graphics acceleration, is frequently caused by outdated, corrupted, or incompatible display drivers. The graphics driver mediates communication between Windows and the GPU, translating instructions from software into visual output on the display. Any conflict or failure in this process can cause visual anomalies such as flickering, tearing, or temporary blackouts.

Option A) is correct because updating or reinstalling the display driver resolves most flickering issues. The technician should inspect Device Manager for warning icons, verify driver version compatibility with Windows updates, and download the latest drivers from the GPU manufacturer’s website. If flickering began after a recent update, rolling back to a previous stable driver version can restore display stability. Disabling hardware acceleration in specific applications provides a temporary workaround while maintaining usability. Ensuring Windows updates are current maintains driver compatibility and overall system stability.

Option B) Low hard drive space may affect performance but does not directly cause intermittent flickering. Disk-related issues manifest as slow performance, failed updates, or application crashes rather than visual anomalies.

Option C) Incorrect screen resolution distorts image output but does not produce intermittent flickering. Resolution issues are static and predictable, not dynamic like driver-induced visual problems.

Option D) A disabled firewall affects network security but does not impact graphics performance or rendering. Visual display anomalies are unrelated to firewall settings.

After updating drivers and making application adjustments, technicians should test multiple applications to confirm the resolution. Monitoring GPU usage and temperature ensures hardware integrity. Proper driver management and configuration prevent flickering, maintain visual consistency, and enhance the overall user experience. Educating users on avoiding unsupported applications or driver updates further minimizes the risk of recurrence.

Q179) A user reports that their Windows 10 laptop cannot connect to a Wi-Fi network, although other devices on the same network function normally. Which of the following should the technician check FIRST?

A) Wireless adapter driver
B) ISP service outage
C) Physical Ethernet cable
D) Screen resolution

Answer: A) Wireless adapter driver

Explanation:

 When a single device cannot connect to Wi-Fi while other devices function correctly, the issue is likely local to that device. The wireless network adapter and its associated driver are responsible for scanning networks, authenticating connections, and maintaining signal stability. Outdated, corrupted, or incompatible drivers can prevent successful connections, even if the network itself is operational.

Option A) is correct because the wireless adapter driver is the first component to verify. The technician should check Device Manager for warning icons, update the driver through the manufacturer’s website or Windows Update, and ensure power management settings do not disable the adapter during idle states. Testing the adapter on other networks helps determine whether the problem is device-specific. If the driver is functional, additional steps include resetting the network stack using “netsh” commands, running the Windows Network Troubleshooter, and checking adapter hardware for failure.

Option B) ISP outages affect all devices on the network. Since other devices can connect successfully, the ISP is not the cause.

Option C) Physical Ethernet cables affect wired connections only and are irrelevant for Wi-Fi connectivity.

Option D) Screen resolution affects display output but does not impact wireless connectivity.

After verifying the driver and configuration, the technician should ensure the laptop can obtain an IP address, authenticate correctly with the Wi-Fi network, and maintain a stable connection. Proper driver and network management ensures reliable connectivity, reduces troubleshooting time, and maintains productivity.

Q180) A user reports that their Windows 10 laptop battery drains rapidly, even when idle, and Task Manager shows multiple background processes consuming high CPU. Which of the following is the MOST likely cause?

A) Excessive background applications consuming CPU resources
B) Low hard drive free space
C) Disabled firewall
D) Incorrect screen resolution

Answer: A) Excessive background applications consuming CPU resources

Explanation:

 Rapid battery drain on idle laptops is frequently caused by background applications consuming significant CPU resources. Programs such as cloud synchronization clients, indexing services, update agents, and maintenance utilities may operate without user interaction. High CPU usage leads to increased power consumption, heat generation, and accelerated battery depletion.

Option A) is correct because identifying and managing CPU-intensive background processes addresses the problem. Task Manager can pinpoint resource-heavy applications. The technician should disable unnecessary startup programs, enable Battery Saver mode, and configure power plans to reduce CPU activity when idle. Educating users to close resource-intensive applications when not in use extends battery life.

Option B) Low hard drive space affects performance but does not directly cause high CPU usage or rapid battery drain.

Option C) Disabled firewall impacts network security but does not affect CPU activity or power consumption.

Option D) Incorrect screen resolution affects visual output but does not significantly increase CPU usage or battery consumption.

Additional measures include scheduling maintenance tasks while plugged in, uninstalling unnecessary software, and monitoring CPU usage over time. Proper management of background processes ensures longer battery life, reduced heat, and optimal system responsiveness. Educating users about efficient application usage further reduces unnecessary energy consumption and improves device longevity.