Weird issue with PC - help appreciated !

Dutchman

Dutchman

Dutchman

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Joined
21 Jan 2008
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488
Location
London
PC was working okay yesterday, but turn it on this morning and although case and cpu fan spin up, gpu doesn't and it doesn't boot.
My PC spec:
Corsair HX 620W PSU
8800gtx
Phenom II x3 720 @ 3.4
Gigabyte GA-MA790XT-UD4p MB
4GB Corsair XMS3 DDR3 TwinX memory
Sunbeam Core Contact cooler
1 x WD 250GB and 1 x WD 750GB Sata drives
DVDRW drive

So first thought is graphics card has gone, but I disconnect and reconnect all power cables to the graphics card and motherboard and try to boot, same thing
So I swop an old Radeon 1950 in and same issue, gpu fan doesn't spin up and no boot.
So I disconnect everything leaving only motherboard and gpu powered and no hdd or dvd, but same thing.
After numerous attempts at taking one item out and putting one back in, I have everything connected again with the radeon 1950 still in, and hey presto, the thing starts up, but there's a weird smell coming from my pc, so I turn it off and sniff around and not 100% sure where the smell was coming from but it smelt like a burning cable of sorts, but no smoke anywhere.
Anyhoo, so I put the 8800gtx back in, pc boots up into windows okay, let it run for 30mins, all okay.Well, almost, the onboard nic now doesn't show up at all. Cable plugged in but no lights on the nic, and no device showing in device manager. Checked bios and it was enabled there, did load default BIOS settings just to make sure but still nothing

Any thoughts on what's gone wrong here, I went from blaming the graphics card, then PSU to now thinking the MB is going bad, especially as the NIC isn't working ?
If it is the MB, I really don't feel like RMA'ing just cause the NIC doesn't work, but guess it could have caused this morning's "outage" and could worsen things ?
 
Any thoughts at all ? Should I perhaps post on the OCUK cust service and see what they suggest in terms of possible faulty mb and RMA ?
 
Hmmm that's pretty weird. Not sure what to say on this. With a burning smell it's normally a PSU problem. Which would in turn explain problems powering up your GPU at times.

Hmm... if I was a betting man, I'd say your PSU was fubar'd.
 
Yep, tried both the 1950 and 8800gtx in the other PCIE slot at the beginning.
System is running now but onboard nic not working and hence me thinking maybe this whole not booting issue was a weird faulty mb thing.
 
dangerstat said:
Hmmm that's pretty weird. Not sure what to say on this. With a burning smell it's normally a PSU problem. Which would in turn explain problems powering up your GPU at times.

Hmm... if I was a betting man, I'd say your PSU was fubar'd.
Click to expand...

that was what I thought when I got the burning smell but yet the system is now up and running and the only not working now is the Onboard nic. Everything bar the GPU is under warranty, but I'd hate to send the PSU back and they find it's fine. At least the motherboard is showing some sign of being faulty although if it's only the onboard nic screwy I'd rather not go through the hassle of RMA'ing
 
dangerstat said:
Hmmm that's pretty weird. Not sure what to say on this. With a burning smell it's normally a PSU problem. Which would in turn explain problems powering up your GPU at times.

Hmm... if I was a betting man, I'd say your PSU was fubar'd.
Click to expand...

About 20 minutes ago my pc just turned off whilst I was busy surfing the OCUK forum, so I guess you may be right. Turned PC back on but guess I'm gonna be getting more issues till I find/guess the right component to RMA. Pity I bought the PSU from a competitor who are well known for their rubbish service, will try Corsair directly
 
Well my pc had fits turning itself off previously and it started getting more frequent then 1 day.... bang went the PSU.

Get your hands on a friends pSU and try that just to rule it out, if its not the cause i'ld say its the mobo
 
Lol, thanks for the suggestion, only friend who has a desktop has a low spec Dell, they've probably superglued the psu to the case !
I've posted on the corsair forum, if they think it's faulty PSU I will rma it directly to them.
 
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