1. Windows 11 Startup or Boot Issues
Symptoms:
- PC stuck on a black or blue
screen
- Automatic Repair loop
- “Inaccessible Boot Device” or
“Bootmgr is missing” error
Fixes:
Option
1: Boot into Safe Mode
1.
Turn off your PC completely.
2.
Turn it on and press Shift + F8
(or power-cycle three times to trigger recovery mode).
3.
Navigate to Troubleshoot →
Advanced Options → Startup Settings → Enable Safe Mode.
Option 2: Repair Boot Files
From Recovery Command Prompt:
bootrec
/fixmbr
bootrec
/fixboot
bootrec
/scanos
bootrec
/rebuildbcd
Then restart your PC.
Option 3: System Restore
If you created restore points earlier:
Troubleshoot → Advanced Options → System Restore → Choose a working restore date.
2. Windows Update Errors
Common Errors:
- 0x800f081f (missing update
files)
- 0x8024a105 (update installation
failure)
- 0x80070002 (corrupted system
files)
Fixes:
Step
1: Run Windows Update Troubleshooter
1.
Go to Settings → System →
Troubleshoot → Other troubleshooters.
2.
Run Windows Update
troubleshooter.
Step
2: Reset Update Components (Command Prompt)
net
stop wuauserv
net
stop bits
del
%windir%\SoftwareDistribution /s /q
net
start wuauserv
net
start bits
Then reboot and check for updates
again.
Step 3: Manually Install Updates
Visit the Microsoft Update Catalog, search for your update
(e.g., KB number), and install manually.
3. Slow Performance or High CPU Usage
Causes:
- Too many startup apps
- Background services or updates
- Malware or corrupted system
files
Fixes:
1. Disable Startup Apps
Go to Task Manager → Startup Apps → Disable unnecessary apps.
2. Run System Maintenance
Open Command Prompt as admin:
sfc
/scannow
DISM
/Online /Cleanup-Image /RestoreHealth
These commands scan and repair
system file corruption.
3. Optimize Background Apps
Settings → Apps → Installed Apps → Background permissions → Never.
4. Check for Malware
Run Windows Security → Virus & Threat Protection → Full Scan or use
a trusted antivirus.
4.
Audio, Display, or Network Problems
Audio
Issues:
- No sound, muted speakers, or “Audio device not found.”
Fix:
1.
Right-click sound icon → Troubleshoot
sound problems.
2.
Update audio drivers via Device
Manager → Sound, video, and game controllers.
3.
Reinstall driver if necessary:
4. devmgmt.msc
→ Right-click → Uninstall device → Reboot PC
Display
Issues:
- Screen flickering, resolution mismatch, or black
screen.
Fix:
1.
Boot in Safe Mode and uninstall
faulty display drivers.
2.
Reinstall graphics drivers from NVIDIA,
AMD, or Intel’s official site.
3.
Press Win + Ctrl + Shift + B
to reset the GPU driver instantly.
Network
Issues:
- Wi-Fi disconnects or no internet.
Fix:
netsh
winsock reset
netsh
int ip reset
ipconfig
/release
ipconfig
/renew
ipconfig
/flushdns
Then restart your PC.
5.
Blue Screen of Death (BSOD) Errors
BSOD errors like “CRITICAL_PROCESS_DIED”,
“MEMORY_MANAGEMENT”, or “DRIVER_IRQL_NOT_LESS_OR_EQUAL” often
signal hardware or driver problems.
Fixes:
1.
Update all
drivers via Windows Update or manufacturer
sites.
2.
Run Memory
Diagnostics:
3. mdsched.exe
Choose Restart
now and check for problems.
4.
Check Disk
Health:
5. chkdsk
/f /r
Schedule
it for next restart.
6.
Use
Reliability Monitor
o
Open Start → Search Reliability
Monitor → Check for recurring error patterns.
6. Application Crashes or Compatibility Errors
Causes:
- Outdated app version
- Missing runtime components
(e.g., .NET, Visual C++)
- Compatibility conflicts
Fixes:
1.
Update the app or reinstall it.
2.
Run the app in Compatibility Mode:
o Right-click the app → Properties → Compatibility → Run
this program in compatibility mode for: Windows 10/8.
3.
Install missing components:
4. Microsoft
Visual C++ Redistributable
5. .NET
Framework 4.8+
6. DirectX
End-User Runtime
7. File Explorer or Taskbar Malfunctions
Symptoms:
- File Explorer freezing or Taskbar unresponsive.
Fixes:
1.
Restart Explorer:
2. Ctrl
+ Shift + Esc → Processes → Windows Explorer → Restart
3.
Clear cache:
4. del
/F /Q %AppData%\Microsoft\Windows\Recent\*
5.
Re-register the taskbar:
6. Get-AppxPackage
*windows.immersivecontrolpanel* | Foreach {Add-AppxPackage
-DisableDevelopmentMode -Register
"$($_.InstallLocation)\AppxManifest.xml"}
8. Windows Activation or Licensing Errors
Common Error Codes: 0xC004F074, 0x8007007B
Fixes:
1.
Check internet connection and
time/date.
2.
Run:
3. slmgr
/ipk <your product key>
4. slmgr
/ato
5.
If still invalid, open Settings →
System → Activation → Troubleshoot.
9. System Restore, Reset, and Recovery Options
When
all else fails:
System Restore
- Control Panel → Recovery → Open
System Restore.
Reset This PC
- Settings → System → Recovery →
Reset this PC → Keep my files / Remove everything.
Reinstallation
Use
the Media Creation Tool from Microsoft to reinstall Windows 11 cleanly.
10. Preventing Future Windows 11 Errors
- Keep Windows and drivers
updated.
- Create regular restore
points.
- Use trusted antivirus
protection.
- Avoid registry cleaners and
unofficial driver tools.
- Back up data to OneDrive or
an external drive regularly.
Conclusion
Windows
11 is designed with self-repair and diagnostic tools that make troubleshooting
easier than ever. By mastering features like Safe Mode, DISM, and Recovery
Options, you can fix most system errors without reinstalling the OS. Regular
maintenance and updates ensure your system remains stable, secure, and
optimized for performance.
Written by: UltraTechGuide
For more Windows troubleshooting tutorials, visit: ultratechguide.blogspot.com
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