PC wont power up after being unplugged... no doing it after shutdown.

opencube

Member
I had a problem when i used to unplug my pc for a few weeks whilst away on holiday. Id come back, plug it back into the wall socket and attempt to switch the PC. the power light would turn on then go straight off. i would then try again, no joy, then on third attempt it would normally be ok.

Recently i have noticed that it takes longer for it to allow it to be started up and now sometimes happen on occasions after a shut down and hasnt been unplugged.

With the case open and powered down i can see power is reaching the motherboard as there is an led light on the board (bright green) which stays on.

The PSU originally came with the case about 3 years ago (400w) and i have never replaced the CMOS battery either.

Any idea what the prob could be?
 

EarthRod

Distinguished Member
Hi

It looks as if the CMOS battery is not being given the chance to fully charge up.

Or (as you say) the CMOS battery is near the end of its life and requires replacing.

Alan
 

opencube

Member
Hi

It looks as if the CMOS battery is not being given the chance to fully charge up.

Or (as you say) the CMOS battery is near the end of its life and requires replacing.

Alan
but i havent had any problems with date and time going wrong?!
 

EarthRod

Distinguished Member
Ah - not the CMOS then! This problem could be anything from a loose connection to a fault on the PSU.

The other thing it could be is the CPU overheating and the cut-out operating. But it seems too quick after the power-on for that.

It could also be the power on/off button is faulty.

Trouble is, from what you've been saying, it's had an intermittent fault for a long time.

Alan
 

opencube

Member
the thing that is consistant is that the pc WILL turn on(so kinda rules out the power button), but its like ive got to give it a few mins to prepare or charge itself.


would this be in the power supply or mother board?

the psu came with the tower and wasnt that expensive... so got a feeling it could be the psu. i supplose i could alway test it out...if it isnt the problem just send it back.
 

Curly99

Distinguished Member
clutching at straws here, check the capacitors on the motherboard, if any are bulging (domed top) or leaking that could possibly cause the problems your having.

Curly
 

knovak08

Standard Member
I am having this same problem, but then the PC was unplugged for over a week. Two weeks later, I still cannot turn the PC on. I replaced the power source, but still not working. I am PC hardware illiterate. I would like to know what I am getting into before I take it to be fixed. Thank you.
 

FireKracker

Active Member
If your PC is still in warranty then just sent it back - any messing around with the insides will void your warranty.

If your PC is out of its warranty period then I would suggest you try another power supply in your PC a quick and easy way to test if yours is knackered!
 

knovak08

Standard Member
I did get a new power source and its still not working. Guess this means I'll have to spend the bucks to have someone look at it.
 

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