2.5 year old OcUK PC fails to boot

Mandalore

Mandalore

Mandalore

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Joined
17 Jun 2008
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32
Location
South Wales
I've had my PC over 2 years with no problems, until this morning when I tried turning it on. It seemed to power up, all the fans started but after about 10 seconds the power cuts and it starts up again (the first time it did this twice, all other times it has done it once). The power then apears to stay on, but nothing at all is displayed on the monitor. There are also no beeps from the motherboard during any of this.

I have tried putting each stick of RAM in each of the 4 RAM slots, this doesn't make any difference. I've also cleared the CMOS, this makes no difference either.

Are there any other things I can try before swapping in different pieces of hardware?

Here are my specs in case this helps:

Abit IP35 Pro
Intel Core 2 Quad Pro Q6600
4GB Corsair DDR2 800MHz RAM
NVIDIA GeForce 8800 GT 512MB
500 GB Western Digital Caviar

Nothing is overclocked.
 
Power supply, is it a branded one or basic OCUK with case? Try to borrow one for testing, or with the PC connected and turned on, use a multimeter to check outputs on 12V and 5V on a molex, red and black, yellow and black.
 
nkata said:
Power supply, is it a branded one or basic OCUK with case? Try to borrow one for testing, or with the PC connected and turned on, use a multimeter to check outputs on 12V and 5V on a molex, red and black, yellow and black.
Click to expand...

I believe it is branded as OCUK provide branded PSU's with their systems!

I could be even Ram- had same issue, ram was faulty!

advice here, try everything: Ram/GPU/ maybe mobo as no sound!
 
Had same problem with my PC, the mobo was fried.

If you have another computer i would check the graphics card and ram, and maybe the PSU.

If thats not the case then id think about buying a new mobo.
 
you know what , i had the exact same problem a couple of weeks ago

all of a sudden the display went blank and the gpu fan spinning at full speed

restart pc got blank screen

i thought 1 of my gpu must be fried or something (have 2 card in crossfired)
so i pull them both out and test each individually, and 1 fail to work and 1 did
but the working card crashed also not long into windows. so i put the 1 didnt work in and took the working 1 out, wtf the not working card it works?!?!

so i was guessing a psu problem

but now i put both card back in and working in xfire, but havent change any hardware and it seem to be working fine for the pass 2 weeks, weird!!!

so i say try taking out and put it back in again
 
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Try the obvious, like swapping out the video cable and monitor if you can. Check your is your PSU is functioning as expected. Use my guide here:
http://www.huddysworld.co.uk/index....rking&catid=40:techie-talk-hardware&Itemid=72

If the PSU looks ok and you've tested the memory and monitor, then you next port of call is the Video card. Try swapping out with a know working card.. Unless you have onboard video, then you may need to purchase a cheap second hand video card for testing only... and keep this as a testing card for future..

If it's not the Video card after that, then it's looking more like the mobo.
 
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I've now been able to test my PC with some of my friends hardware, and got some confusing results.

I put his Radeon 4870 in my PC, and it booted up fine. Tried my Geforce 8800GT in his PC, it also booted up fine. But when I put the Geforce back into my PC I get exactly the same failure.
 
The Radeon card used 2 power cables compared with just 1 for the Geforce. Wouldn't the Radeon have more problems if the PSU was dodgy?
 
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