No POST after crash in Windows...

garethrobinson1

garethrobinson1

garethrobinson1

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Joined
16 Oct 2005
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446
Location
Essex
Hi,

Well I took delivery of an overclocked i7 930 bundle a couple of weeks ago and all has been fine until today. I haven't had a single crash since I've installed the bundle and everything has been working fine.

However, today I turned my PC on early this morning, did some web browsing and left the PC on for a few hours. I returned to the PC about 2pm to find the PC had locked up completely in Windows

This had never happened before so I was confused as to what could have caused it. Anyway, I powered down and powered up again, but no POST. No display on the monitor, nothing.

So I call OCUK immediately and they advise I remove 2 of the sticks of RAM and remove the CMOS battery for a minute or so. I did this, but still no POST. I then removed everything in the PC, bar the bare essentials (mobo, CPU, RAM, graphics, PSU). However, it's still the same.

I reset the CMOS using the jumper AND also removed the battery, but again no POST.

All fans begin spinning, drives spin up, lights come on etc but no POST.

I'm at my wits end here and really cannot understand how a PC / bundle that's been working absolutely fine without a single crash since installation a few weeks ago can suddenly crash in Windows and cannot POST again. :confused:

I can't think of anything else to try and I think the mobo might have died....

I've raised a support thread in the technical assistance area, but seeing as the support team don't appear to be in until Monday I thought I'd ask on the general forums.

Please help me? :(
 
did you unplug from mains when you took battery out if not try that leave battery out for 10 mins see if that works
 
Yeah I unplugged from the mains and left the battery out for over half an hour. Popped it back in but no luck.

I just find it so weird that it would suddenly do this... I've had it before whereby when carrying out a new build, the PC wouldn't POST etc and it turned out to be a dead motherboard. But I've never had a PC lock up and then refuse to POST at all... very odd.
 
Sure I read on these forums that a H50 cooler struggles to cool a 4ghz i7,

When you installed it all did you check temps for your first view hours of use
 
Tried all memory sticks in all slots, but no luck.

I very much doubt it's a cooling issue to be honest. The PC crashed in Windows when it was idling. My idle temps are around 35c. Also, if it were a cooling issue i'd have expected to have had problems when I've been playing Bad Company 2 for hours upon end. But as I said before, I haven't had a single crash so far so it appears something has literally failed.

Overclockers said that the H50 doesn't adequately cool an i7 at 4.2Ghz but even so, it wouldn't stop it from getting through the POST phase.

Thanks for everyone's help so far.

Pulling my hair out here! :(
 
think you might have to rma it m8 have you got a spare graphic card if so put that in and try i remember a m8 had a graphic card fault and his pc wouldnt boot
 
I'll try a friends graphics card tomorrow. It's either the graphics card, PSU, CPU or motherboard that's for sure because I've disconnected absolutely everything else. I thought it might be worth trying it all outside the case, but I'm sure it can't be any kind of 'shorting out' issue because it's been working fine in the case for weeks.
 
Thanks for the help.

I'll see if he lets me either borrow his PSU or try mine in his. Might not be too willing though as he's only just got his up & running himself. I just can't think of anything else to try this evening now.
 
Ok quick update on the current situation.

I've tried my brother's graphics card (8800 GT) and PSU (Corsair 620W) in my PC and it's still not working - all drives spin up, fans spin, all LED's turn on etc but it just will not POST.

So that only leaves the motherboard or the CPU. I think I'm going to have to RMA this :(
 
Thanks.

I've just tried the motherboard, cpu, graphics card, PSU and memory outside of the case (built on top of the motherboard box) but it's just the same.

I've had 2 dead motherboards in the past, but they were dead on arrival. I've never had a previously-working motherboard (or CPU for that matter) die on me at all, let alone dying whilst idling in Windows! Very, very strange. :(
 
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