PC needs PSU toggle to boot up - any idea what is going on here?

Engram

Engram

Engram

Associate
Joined
6 Jul 2004
Posts
995
Location
England
Does anyone have any idea why I have to do this to boot my PC?

1. Press power button, some fans start but GPU fan stays slow, PC does not boot, monitor does not turn on.
2. Turn off PC with PSU switch, wait around 0.5 seconds, turn PSU switch back on.
3. All fans spin up (without me pressing power button), boot sequence starts.

If I get the delay wrong at step 2, I can try again and it will work.

What the hell is going on? Is it a PSU problem? I haven't changed any hardware recently.
 
Would it make a difference? Given that it's all worked perfectly for ~2 years?

I will check the spec tonight and update.
 
Ok, here's the spec:

Intel Core i5-3570K
Asus P8Z77-M
Corsair CML8GX3M2A1600C9 LP Vengeance 8GB (2 x 4GB)
Asus HD 7950 DirectCU II V2 3072MB
OCZ600SXS (600W)

Nothing is overclocked.

My money is on the PSU or the motherboard, but is there any way to tell (other than replacing one of them?)
 
Aslong as its good enough for those parts.

Also you can reduce the load on the PSU by taking the gfx card out and using the onboard.
 
Thought I'd give update on this...

I ended up buying an EVGA GS 650 (as I wanted a modular PSU anyway). The problem is now solved! :)

I guess the OCZ PSU was on its way out.
 
You must log in or register to reply here.
Back
Top Bottom