PSU fails to wake PC from sleep reliably

Associate
Joined
1 Oct 2020
Posts
64
Out of the blue, following behaviour:

  • PC boots out of cold state
  • When I put it to sleep, and try to wake it later, half of the time, I hear a click, the sleep light goes out permanently and it doesn't react to power button presses anymore.
  • I have to fully shut off (with the I/O button) the PSU before I can start my PC again.

Faulty / failing PSU? (A 3 year old Corsair RMX850)

The fact that I can sometimes get it to boot fully and click around in Windows leads me to believe that the actual components are fine, and it's just the power required to wake from sleep that is failing in the PSU?
 
If it was a software issue, wouldn't the behaviour be consistent? I get about a 50/50 chance it wakes from sleep.

Also relevant: we had a short power cut here yesterday. Might have disturbed something.
 
Back
Top Bottom