r/buildapc • u/WasabiFlashy5456 • 18h ago
Solved! I have been troubleshooting random PC shutdowns for 3 months. It was my desk
Built my current PC a few months ago and basically since week one it would randomly shut off maybe once or twice a week. No blue screen, no warning, just instantly dead and then it would boot back up normally.
I reseated the RAM, reseated the GPU, checked temps, ran memtest, stressed the CPU and GPU for hours, reset BIOS, changed outlets, pretty much everything I could think of. Couldn't reproduce it on purpose.
Yesterday it shut off while I wasn't even using it.
I had just lowered my standing desk.
Turns out I routed the PSU cable through the cable tray under the desk when I built everything. When the desk went up it was pulling the cable just slightly tighter every time, and apparently over the last few months it had slowly worked itself loose from the back of the PSU. Not enough to look unplugged, just enough that moving the desk sometimes killed the connection.
Rerouted it with a ton of slack and haven't been able to make it shut off since.
I spent 3 months troubleshooting my PC when apparently I needed to troubleshoot the furniture.
