[HELP] PC Won't Power On Sometimes

[Husky]

Hi,

 

Sometimes if I try to turn on my PC, nothing happens. I press the power button and nothing... No fans, no POST, no drives spinning up. The PSU does make a very quiet buzzing noise though.

 

After about 40 seconds of waiting, the PC suddenly powers on, drives start spinning and it POSTs and runs just fine

 

This is random, I could shut down my computer and it will turn on instantly when I press the power button, other times not. I've tried pressing the button several times, tried holding it down, tried the button on the motherboard, nothing... The standby lights on the motherboard remain on though...

 

Even if i turn off my power supply completely and wait a few mins. for the motherboard lights to turn off and the system to drain completely, it only turns on sometimes.

 

This didn't happen when I first got my PC, it just started randomly. I've tried reseating power cables, reseating RAM, resetting CMOS, shutting down from Linux etc... nothing has helped.

 

I can post a video if you want, it might be able to explain the problem a bit better.

[MozyIT]

I'd try troubleshooting with a known good power supply.