IT Skills

Windows 10 Troubleshooting Guide




Having trouble with Windows 10? Here’s a step-by-step troubleshooting guide to fix common Windows 10 problems and get your PC running smoothly again!


1. Windows 10 Won’t Turn On

Problem: The computer doesn’t boot or shows a black screen.
Solution:
Check power connections (Plug, battery, power button).
Remove external devices (USB, HDMI, etc.).
Perform a force restart (Hold the power button for 10 sec, then turn it back on).
Boot into Safe Mode (Turn off & on 3 times Advanced Options Startup Settings Enable Safe Mode).
Check for loose RAM or faulty power supply (if on a desktop).


2. Windows 10 Running Slow

Problem: Apps take too long to open, and the system lags.
Solution:
Restart your PC (Win + X Shut down or sign out Restart).
Check Task Manager (Ctrl + Shift + Esc) for high CPU or RAM usage.
Disable startup apps (Settings Apps Startup).
Clear temporary files (Win + R Type "temp" Delete files).
Turn off animations (Settings Performance Adjust for best performance).
Upgrade to an SSD for better performance.


3. Wi-Fi or Internet Not Working

Problem: No internet connection, Wi-Fi disconnects frequently.
Solution:
Restart the router & PC.
Forget & reconnect to the Wi-Fi network (Settings Network & Internet Wi-Fi Forget This Network).
Run Network Troubleshooter (Settings Troubleshoot Internet Connections).
Reset network settings (Settings Network & Internet Status Network Reset).
Update Wi-Fi drivers (Device Manager Network Adapters Update driver).


4. Bluetooth Not Working

Problem: Can’t connect Bluetooth devices.
Solution:
Turn Bluetooth off & on (Settings Bluetooth & Devices).
Remove & re-add the device (Settings Bluetooth & Devices Remove Device Reconnect).
Restart Bluetooth Services (Win + R Type "services.msc" Find Bluetooth Support Service Restart).
Update Bluetooth drivers (Device Manager Bluetooth Update Driver).


5. Windows 10 Won’t Update

Problem: Windows Update fails or gets stuck.
Solution:
Restart & retry the update (Settings Windows Update Check for updates).
Run Windows Update Troubleshooter (Settings Update & Security Troubleshoot Windows Update).
Free up disk space (Settings Storage Cleanup Recommendations).
Manually install updates (Download from Microsoft Update Catalog).
Reset Windows Update components (Run "net stop wuauserv" & "net stop bits" in Command Prompt as Admin).


6. Printer Not Working?

Problem: Windows 10 doesn’t recognize the printer.
Solution:
Check printer power & connections (USB/Wi-Fi).
Remove & re-add the printer (Settings Devices Printers & Scanners).
Run Printer Troubleshooter (Settings Troubleshoot Printer).
Update printer drivers (Device Manager Printers Update driver).
Set the printer as default (Settings Printers & Scanners Manage Set as Default).


7. No Sound or Audio Issues

Problem: No sound from speakers or headphones.
Solution:
Check volume settings (Click speaker icon Increase volume).
Ensure the correct audio output is selected (Settings Sound Output Device).
Restart Windows Audio Services (Win + R Type "services.msc" Restart Windows Audio).
Update audio drivers (Device Manager Sound, Video & Game Controllers Update driver).
Run Audio Troubleshooter (Settings Troubleshoot Audio).


8. Windows 10 Startup Issues (Black/Blue Screen)?

Problem: The PC gets stuck on startup.
Solution:
Boot into Safe Mode (Turn off & on 3 times Advanced Options Startup Settings Enable Safe Mode).
Run Startup Repair (Advanced Options Troubleshoot Startup Repair).
Uninstall recent updates (Advanced Options Uninstall Updates).
Check for corrupted system files (Command Prompt Type "sfc /scannow").


9. Windows 10 Activation Issues

Problem: "Windows is not activated" error appears.
Solution:
Check if your license key is valid (Settings Update & Security Activation).
Re-enter the product key (Win + X Command Prompt (Admin) Type "slmgr.vbs /ipk YOUR-KEY").
Use the Troubleshooter (Settings Activation Troubleshoot).


? External Hard Drive or USB Not Recognized

Problem: Windows 10 doesn’t detect an external device.
Solution:
Try a different USB port & cable.
Check if the drive appears in Disk Management (Win + X Disk Management).
Assign a drive letter if missing (Right-click the disk Change Drive Letter).
Format the drive if necessary (Right-click Format as NTFS/exFAT).


11. Screen Flickering or Display Issues?

Problem: The screen blinks, flashes, or has resolution issues.
Solution:
Update graphics drivers (Device Manager Display Adapters Update Driver).
Change refresh rate (Settings Display Advanced Display Refresh Rate).
Boot into Safe Mode & uninstall recent updates.
Check HDMI/Display cables for damage.


12. Windows 10 Crashing or Freezing?

Problem: The PC crashes randomly or becomes unresponsive.
Solution:
Update Windows & Drivers (Settings Windows Update).
Check for overheating (Clean dust, ensure proper ventilation).
Run "sfc /scannow" to fix system file errors.
Check Event Viewer for error logs (Win + X Event Viewer Windows Logs System).
Disable unnecessary startup apps (Task Manager Startup).


? Final Troubleshooting Tips

Restart your PC – Fixes most minor issues!
Run Windows Troubleshooters (Settings Update & Security Troubleshoot).
Check for Windows 10 updates (Settings Update & Security Windows Update).
Boot into Safe Mode to diagnose issues (Shift + Restart Troubleshoot Startup Settings).
Backup important files before major changes (OneDrive, USB drive, external storage).


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