DIAGNOSTIC GUIDE
Troubleshooting
12 common PC problems with step-by-step fixes.
PC Powers On But No POSTBOOTADVANCED
Fans spin but no beep · No image on screen
Black Screen After BootDISPLAYMEDIUM
Windows loading spinner appears then black screen · Can hear Windows startup sound
Blue Screen of Death (BSOD)BOOTMEDIUM
Random blue screen with error code · PC restarts unexpectedly
CPU / GPU OverheatingTHERMALMEDIUM
Temperatures above 90°C under load · PC throttles or slows down
PC Will Not Turn On At AllBOOTADVANCED
Nothing happens when pressing power button · No fans spin at all
Random Restarts / ShutdownsBOOTMEDIUM
PC restarts without warning · No BSOD before restart
PC Suddenly SlowPERFORMANCEEASY
Everything feels sluggish · High disk usage in Task Manager
No Display SignalDISPLAYMEDIUM
"No signal" on monitor · Monitor shows input source but nothing from PC
USB Device Not DetectedCONNECTIVITYEASY
USB device not recognised · Device shows as "Unknown Device"
Fans Extremely LoudTHERMALEASY
Fans spin at full speed on startup · Fan noise louder than usual under load
PC Freezes / HangsPERFORMANCEMEDIUM
Screen freezes with audio loop · Mouse cursor stops moving
No Sound / Audio Not WorkingAUDIOEASY
No audio from speakers or headphones · Audio device not found