Have a weird problem .... not sure if mobo or PSU

Weazle · 1 Nov 2018 at 09:13

Hi,

I have a weird problem where sometimes if I turn on my computer, it does not go into post.

The power comes on and the lights on the case come on indicating something is turning on but the motherboard doesn't react.

I would do a combination of pulling the cable out or switching the power switch to off then waiting 10-60 seconds ... a few times at least before I switch it on, the computer does it beep and it starts post.

I am leaning towards motherboard but it could be the PSU acting up and not supplying enough voltage.

Thoughts guys?

Thanks.

X x X · 1 Nov 2018 at 14:15

Sounds stupid but disconnect everything and connect them again

What psu do u have?

EsaT · 2 Nov 2018 at 10:04

My crystal ball has also same problem, so what parts you have in PC?
Would fit quite well to capacitors going bad, usually in PSU.
And who knows if empty "BIOS"/RTC battery (CR2032) could also cause this.

Also did you do anything out of normal before problem appeared?
Like moving PC, which might have caused some connector to loosen little.

Weazle · 2 Nov 2018 at 16:46

Cables are secure, could be capacitors or the CMOS battery.

Gonna try the CMOS battery first.

swealp · 2 Nov 2018 at 17:14

Test 1 in a time, and you will see what is the issue. Easy but most costly.

Weazle · 3 Dec 2018 at 10:38

Well it turned out to be the motherboard, it kinda died so it wouldn't go into post ... power would go to everything (drives, motherboard lights, etc). It looks like the BIOS got corrupted and screwed it. It did have a dual BIOS but I had to put it into single BIOS mode a few years ago as it was boot cycling.

So replaced it with a LGA1151 setup now.