PC unknown problem/not turning on

Atmos · 6 Feb 2011 at 20:38

I switched cases today, but when I tried to turn on the PC it just didn't turn on, there's a flicker of blue light from my led fan but then nothing. What could this be?

I've checked the motherboard pin connectors and they're put in properly.

Atmos · 6 Feb 2011 at 20:41

Crowort said:
You checked you have the power switch in the mobo headers right?

Yep, that's in the right position and firmly in.

Atmos · 6 Feb 2011 at 20:46

RJC said:
Double check all electrical connections are in correctly, did you use the standoffs in the case, as you might have a short.

Yes I did use standoffs, if I did have a short would this mean I'd need a new motherboard?

Atmos · 6 Feb 2011 at 20:49

Another thing, it's like it's turning on in the fact that to get the led's to flicker again I have to hold down the power button as if I'm turning it off then click the power button again.

Atmos · 6 Feb 2011 at 21:20

I just took the battery thing out for 10 minutes then put it back in, the same thing happens so nothing has changed

Atmos · 6 Feb 2011 at 21:48

predator70 said:
are you using a different power supply when u switched cases ?

Nope, everything is the same.

Atmos · 6 Feb 2011 at 22:32

Buchanan0204 said:
Do as "RJC" suggested. Disconnect all hard drives, cd roms, pci cards etc. Have only the CPU, RAM and Graphics (onboard if possible). Use only one Ram module in DIMM 1 closest to CPU, try all modules if at first it fails.

Then as also suggested, take it out the case and try firing it up outwith the case to eliminate any shorts.

If it was shorting it should be alright, never really seen any long term damage from shorts. Fingers crossed anyway.

Just did what you suggested, the CPU fan was spinning fully but it didn't sound like the PC was fully on. I will plug the monitor in to see if anything comes up.

Atmos · 6 Feb 2011 at 22:35

Ok, it seems to be working by following what you said, it says there's some sort of CMOS error.

I'm not entirely sure what was wrong then though.

Atmos · 6 Feb 2011 at 22:51

Buchanan0204 said:
Is it a CMOS Checksum error by any chance?

Have you connected everything else back up, is it now working?

Yes it is a CMOS Checksum error, I've not yet connected anything else back up.

Atmos · 6 Feb 2011 at 23:16

Thanks for the help everbody, thanks Buchanan0204, I've plugged everything in and it loads, I will do a cmos reset shortly

Atmos · 6 Feb 2011 at 23:45

Thanks again, using the PC now and it works perfectly fine again