Computer Wont Boot After Power Cut

v3llr · 19 Sep 2014 at 12:03

Hi there,
Yesterday my power went off at home and I later went on my PC for about 5 mins before I smelt a burning and then shortly after my PSU died with a pop.
I then went out and bought a new PSU, A Corsair CXM 500W.

The computer then booted fine and was working until I tried to turn it on this morning.
The computers fans now turn on and the GPU (which is a HD6770) fan's rpm oscillate. But nothing happens after that

I have tired removing the GPU and booting it without it, however it still wont boot.
My motherboard doesn't have a bios battery that I can take out or anything like that and I have checked all the connections from the PSU to the computer and it all seems to be connected fine. All of my sata connections are all fine as well, not that that should matter anyway as I am not even getting into the bios, or even appear to be running the POST.

If you have any ideas on what is going on and if you think the power cut destroyed my PC then please let me know.

Thanks,
Sam

Mr-White · 19 Sep 2014 at 12:21

1. There should be jumpers to reset the bios somewhere on the mobo
2. Try minimal boot , just cpu & memory, no gfx, hdds or other cards
3. Try removing the power out the back of the PSU for a few seconds if you haven't already done that.

MW

v3llr · 19 Sep 2014 at 12:43

Thanks, Resetting the CMOS seems to have done the trick

v3llr · 20 Sep 2014 at 11:29

Just tried to boot my computer again today after turning it off last night, same thing has happened ....
I think I must have a mobo problem

Do you think this sounds like a mobo issue?

wazza300 · 20 Sep 2014 at 11:30

did you take out the cmos motherboard battery and leave it out a good 30 minutes? then put back in and try? also tried reseating your memory

ive also had a powercut blow a psu yet everything else was fine

v3llr · 20 Sep 2014 at 11:46

unfortunatly I cannot take the CMOS battery out of my motherboard, however I have reset the CMOS with CMOS reset jumper.
but I will still try to reset the memory and let you know how I get on.

v3llr · 20 Sep 2014 at 12:08

Just Tried resetting memory.
Didint work :/ I had to unplug all of the peripherals and it has now booted, not really a solution however, as I dont want to have to do this every time I turn my PC on... I think I must have a problem with my mobo and/or graphics card. Not sure which however ...

nutsnut · 20 Sep 2014 at 13:13

Corrupt motherboard bios? Reflash it?

Quartz · 20 Sep 2014 at 13:51

Regardless of the immediate solution, the long-term solution is to buy yourself a UPS.

BarKeep · 20 Sep 2014 at 14:55

v3llr said:
unfortunatly I cannot take the CMOS battery out of my motherboard, however I have reset the CMOS with CMOS reset jumper.
but I will still try to reset the memory and let you know how I get on.

Why not?

Full system specs. would help.

v3llr · 21 Sep 2014 at 10:31

Feel like an idiot. I could take the CMOS battery out, it was just hiding under my GPU... But yeah I think a UPS is in order, even tho the PC wasnt even on when the power cut happened ... ohh well
Thanks for all the help, it does seem to be working, for the moment at least