Troubleshoot Windows OS Problems Flashcards

Lesson 13C

1
Q
A

Windows 10 startup options.

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2
Q
A

Windows 10 Startup Settings.

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3
Q
A

Windows 10 Startup Troubleshooting—Advanced options.

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4
Q
A

Configuring System Protection in Windows 10.

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5
Q
A

Using System Restore to apply a previous system configuration.

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6
Q
A

install update

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7
Q
A

driver rollback

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8
Q
A

startup recovery

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9
Q
A

Blue Screen of Death (BSOD)

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10
Q

EFI

Boot Process

A
  • self-test (POST)- parts check
  • boot device- GUID partition table (GPT)
  • EFI boot manager (BOOTMGFW.EFI.)/BCD - in EFI system partition
  • OS boot loader (WINLOAD.EFI.)
  • kernal
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11
Q

Legacy BIOS

Boot Process

A
  • scans disk (boot device)
  • master boot record - in Disk’s first sector .
  • boot sector -in active partition
  • boot manager (BOOTMGR.EXE)
  • boot configuration data (BCD) file- (OS)
  • Windows boot loader WINLOAD.EXE
  • kernel (NTOSKRNL.EXE)/hardware abstraction layer (HAL.DLL)/drivers
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12
Q

Defined

Boot Process

A

The boot process begins with a POST to check system components, followed by identifying the boot device and loading the boot loader via either BIOS (using MBR) or EFI (using GPT). It then loads the kernel, initializes processes, and prepares for user authentication.

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13
Q

Advanced Boot Options menu

A

offers troubleshooting startup modes, such as Safe Mode, accessed via F8 for BIOS boot** or** holding SHIFT during UEFI restart, allowing isolation of issues and use of recovery tools.

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14
Q

UEFI

Advanced Boot Options

A
  • Hold the SHIFT key when selecting the
    Restart option from the Power menu on the lock screen:
  • Choose an option screen
  • Troubleshoot.
  • Advanced options
  • Startup Settings
  • Restart
  • F4 to select Safe Mode
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15
Q

advance boot options

safe mode

A

loads only basic drivers and services required to start the system to run analysis/recovery tools, such as chkdsk, SystemRestore, or antivirus utilities.

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16
Q

Windows Recovery Environment (WinRE)/Startup Repair

A

allow troubleshooting and recovery by booting from product media, repair disks, or recovery partitions to access tools like Startup Repair, System Restore, and command prompt utilities for manual repair.

17
Q

command prompts

Windows Recovery Environment (WinRE)

A

Manually:
* diskpart
*sfc
*chkdsk
*bootrec
*bcdedit
*regedit

18
Q

System Restore

A

allows you to roll back from system configuration changes (does not restore (or delete) user data files).

19
Q

system restore

System Protection tab

A

allows enabling disks for system restore, managing disk capacity, and creating restore points automatically or manually, while System Restore (rstrui.exe) facilitates system recovery through restore points or recovery tools.

The disk must be formatted with NTFS, have a minimum of 300 MB free space, and be over 1 GB in size.

20
Q

Update rollback

A

If an update causes problems, you can try to uninstall it:
* Programs and Features applet
* select View installed updates
* Select the update
* select the Uninstall button.

21
Q

Roll Back Driver feature

A
  • Device Manager
  • right clk, Properties
  • Driver tab
  • Roll Back Driver
22
Q

recovery image

A

allows a full system backup, created via the Backup and Restore applet in Control Panel, which can be used for recovery through Advanced Boot Options or System Image Recovery in the repair environment.

23
Q

Reinstalling Windows

A

via the “Reset this PC” option allows you to repair or reset the system, preserving user files or securely deleting data for ownership transfer, while removing desktop applications and restoring default settings.

24
Q

“No boot device found”
or “Invalid boot disk”

A

the system has completely failed to boot: cause may be the firmware starts on USB; change priority, hard disk; check attachments or failing drive.

25
"no OS found"
diagnose the disk with tools like chkdsk, bootrec, and diskpart, or modify system setup and recovery settings to repair boot information or detect the operating system.
26
Graphical Interface Fails to Load/Black Screen
If Windows fails to load the graphical interface or displays a black screen, troubleshoot by checking for driver or system file issues, using Safe Mode, running commands like chkdsk or sfc, or addressing boot configuration settings. START+CTRL+SHIFT+B (system response).
27
Slow Windows boot times
- Slow Windows boot: Enable verbose status messages to identify delays, often caused by slow-loading drivers, network misconfigurations, or file corruption. - Slow desktop load after sign-in: Likely due to a corrupt user profile, especially issues with NTUSER.DAT. - Fixing a corrupt profile: Create a new account and transfer files from the old profile, but exclude NTUSER.DAT, NTUSER.DAT.LOG, and NTUSER.INI to prevent carrying over corruption.
28
Sluggish performance
Here’s a concise summary: - **Slow Windows boot**: Enable verbose status messages to identify delays, often caused by slow-loading drivers, network misconfigurations, or file corruption. - **Slow desktop load after sign-in**: Likely due to a corrupt user profile, especially issues with **NTUSER.DAT**. - **Fixing a corrupt profile**: Create a new account and transfer files from the old profile, but **exclude** NTUSER.DAT, NTUSER.DAT.LOG, and NTUSER.INI to prevent carrying over corruption.
29
Sluggish performance
Here’s a streamlined summary: - **Check Task Manager**: Identify resource usage at 90–100% and locate the most active process. Common culprits include **svchost.exe**, Windows Update, SuperFetch, telemetry, indexing, and security software. - **Monitor activity**: If CPU, memory, and disk usage are mixed, the process is slow but functional. If disk remains at 100% or stalls, it may indicate a stuck process. - **Restart or end tasks**: If unresponsive, restart the service or kill the task. - **Reboot if necessary**: If performance doesn’t improve, a reboot might resolve temporary issues. Let me know if you need more troubleshooting insights!
30
Sluggish performance
Here’s a streamlined summary: - **Unresponsive service or process**: If restarting doesn't resolve it, try disabling it and check for known vendor issues. - **Low memory errors**: Reduce running applications to isolate the issue. If a memory leak is suspected, the vendor may need to fix it. If the system struggles with multitasking, upgrading RAM could help. - **Low disk space errors**: Use Disk Cleanup to remove unnecessary files. If the issue persists, investigate excessive logging or temp file creation by applications. If no anomalies are found, more storage may be necessary.
31
Sluggish performance
* Disable startup items—Use the System Configuration Utility (msconfig) or Task Manager to prevent unnecessary services and programs from running at startup. If you need to run the services, consider setting them to delayed startup or manual startup to avoid slowing down boot times too much. If a service is not required and is causing problems, you can set it to Disabled to prevent it from being started. Note that some security-critical services (such as Windows Update) can be re-enabled automatically by the OS. * Scan the computer for viruses and other malware, but also check the configuration of antivirus software—While necessary to protect against malware threats, security scanning software can reduce system performance. Try disabling scanning temporarily to test whether performance improves. Make sure the software is configured to exclude Windows system files it shouldn’t scan, and configure any exceptions for software applications recommended by the vendor. These typically include database files and the image files used for virtual hard disks. * Check for power management issues—If the user has been closing sessions using sleep or hibernate, try restarting the computer. Verify that the system is not operating in a power-saving mode (CPU throttling). Be aware that this might have an underlying cause, such as overheating.
32
blue screen of death (BSoD)
- **Use System Restore or Safe Mode**: Roll back drivers or updates to restore functionality. - **Remove recent hardware/software**: Uninstall anything recently added that could be causing conflicts. - **Check hardware connections**: Ensure components and cables are properly seated. - **Run diagnostics**: Use hardware tests, **chkdsk**, and malware scans to rule out system corruption. - **Clean vents and fans**: Prevent overheating by removing dust buildup. - **Record error code**: Search Microsoft's Knowledge Base for known fixes using the STOP error code.
33
OS start up troubleshooting
Here’s a concise summary: - **Apply updates**: Ensure Windows, applications, and drivers are up to date. - **Defragment HDDs**: Regular defragmentation improves file access and performance, but SSDs do not require it. - **Verify system resource usage**: Use Task Manager, Resource Monitor, or Performance Monitor to check for high CPU, memory, disk, or network usage and upgrade hardware if necessary. Would you like recommendations on specific troubleshooting tools?
34
System Instability and Frequent Shutdowns
- **Potential causes**: Overheating, power issues, faulty CPU/chipset/RAM, or corrupt kernel files. - **Diagnosing memory issues**: Use **Windows Memory Diagnostics**, removing and testing RAM modules individually to isolate faulty hardware. - **Checking file system integrity**: Run **sfc C:** to scan for corruption, and **sfc C: /f** to attempt repairs.
35
USB Issues
- **Ensure up-to-date drivers**: Check Windows Update or the vendor site for the latest chipset and USB 3 host controller drivers. - **Reinstall USB controllers**: Use Device Manager to uninstall and then reboot to reinstall them. - **Disable USB selective suspend**: If issues persist, turn off power management for specific ports or system-wide. - **Address USB controller resource warnings**: - Avoid exceeding device limits on a single controller, especially with unpowered hubs. - Use **USB 2 ports** for low-bandwidth devices and reserve **USB 3** for external storage and network adapters. - Reduce connected devices or test individual ones to identify a faulty component.
36
Application and Service Fault Issues
- **Preserve data first**: Recovery features in Microsoft Office, Windows File History, or OneDrive can help prevent loss. - **Give the process time**: If unresponsive, check temp files for data recovery before ending the process in Task Manager. - **Investigate event logs**: Determine if crashes are related to a specific data file or application error. - **Check for updates**: Applications must be updated separately from Windows; find the option in the **Help** menu. - **Reinstall or repair**: If updates don't resolve the issue, uninstall, reinstall, or use the repair installer. - **Handle stubborn uninstall issues**: If some files or registry settings remain, follow manual removal instructions.
37
services that fail to start:
- **Identify the failing service**: Use **Event Viewer** or **Services** snap-in. - **Restart manually**: If stuck, try starting or setting it to **delayed start**. - **Check dependencies**: Some services rely on others to run. - **Verify permissions**: Ensure the service has correct user account privileges. - **Diagnose system issues**: Scan for **file corruption, disk errors, or malware**. - **Reinstall affected applications**: If tied to an app, reinstall it. - **Re-register DLLs**: Use **regsvr32** to repair software components. - **Remove orphaned entries**: Check **msconfig** or **regedit** for leftover startup shortcuts.
38
Here’s a concise summary: - **Time synchronization is critical**: Authentication and backup processes require precise time alignment between local PCs and network servers. - **RTC chips are unreliable**: Internal clocks can drift, especially for remote clients, causing desynchronization. - **Network synchronization methods**: Using **GPS-based time sources** or an **Internet time pool** ensures consistency. - **Optimal configuration**: Servers should act as **authoritative time sources** for clients to maintain accuracy.