Help - PC starting to crash in games.

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6 Jan 2009
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Until recently, my PC has been running near perfectly, but now...

Every so-often, and really quite randomly, when playing games, the screens flash a few times then freeze. The monitor that isn't showing the game works for a few seconds more. If there's something in iTunes it cotinues playing until the end of the song. It never does it instantly though - there's usually an hour or two before it fails.

I have to hit the power button to get my system back.

There's nothing in the event viewer, there's no error messages in the applications, windows isn't trying to do anything particularly cunning before the crash, the system is clean of malware. There isn't any of the graphical corruption I'd normally associate with a failing graphics card. dxdiag says that everything is fine.

The game doesn't matter - it happens in old reliables like CoH and in delicate flowers like Fallout 3.

Nothing is overclocked. Wondering if it was a heat problem I recently took steps to cool down the case, but since the graphics card reaches the same temperature under load as before (and that temp, though high was within its operating limits) the case cooling is more for the benefit of all the other components.

I run dual monitors at 1280*1024 each, but have been doing so for months without a problem.

Everything is getting enough power - recently upgraded to a high end 750W power supply.

I suspect that something is broken hardware wise, because I've undone the only recent system change and rolled back my video drivers.
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Windows XP home SP3
3Gb of DDR2 800Mhz ram
XFX GeForce 8800 GTX with 768 MB - driver version : 178.13 (not the newest, as I said, I rolled them back because I thought that the new ones might be the problem)
Intel E6600 Core 2 Duo @ 2.4 Ghz
ECS 965T-A motherboard (yes, a bit rubbish, I know.)
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I am going to be swopping my graphics card for my old 7950GTX tomorrow to see if the problem goes away.
 
Assuming you've checked all your connections, only thing I could suggest is try bumping a few of the voltages in your BIOS; NB, SB, RAM, you could also try altering your PCI-E freq set it to 105
 
It helps stabilise the system, IF the problem is that your system is crashing because its unstable, then this will help stabilise it. Have you tried running prime95 or anything like that to test its stablity?
 
Ran prime 95 for about three hours with no errors (beyond the brand new case fan apparently popping its clogs, at which point I stopped it because the heat was starting to crawl up)
 
Was going to say, could be a heat problem. Have you cleaned out your cpu cooler etc...?

Also could be power related, as in your PSU may not be up to the job or on it's way out.
 
Was going to say, could be a heat problem. Have you cleaned out your cpu cooler etc...?


Sounds like Dust build up to me causing over heating & a quick reboot.
If you want a Full assessment of your cooling though you need to post a couple of pics.
If it is not dust then I'd say you have created a hot spot when you moved stuff around in there.
If not Dust or a Hot spot then I'd say Virus/Spyware/malware.
 
How old is your XP installation? After a while it can just go 'bad', continual installs, de-installs, Windows and Driver updates can just degrade an XP install. If there are no obvious hardware faults I would try re-installing the OS.
 
Everything is physically clean in the system btw - part of adding the new fan and power supply was cleaning everything and making sure that all fans spun freely.

It's not malware and case temps have gone down according to speedfan since I added the extra cooling, and the problem started before then (it's what prompted me to add more cooling as I thought it was heat related).

re: Age of XP installation - Two and a bit years, but it's had very little done to it apart from Windows updates, and well, I've never seen a PC do this and it be a software fault - I'm prepared to consider that it might be the OS, but I would like to eliminate all hardware before I say, 'Alright, time to spend this weekend re-installing XP and patching everything', because I have more interesting things to be doing with my weekend.
 
If this random issues has started since your "spring clean" inside your case, i would unplug and re-seat every card and power connector. If that does not sort it, have you a spare graphics card you could try for a bit. Did you protect yourself from static zaping your gear while cleaning it? static dmg can present itself in a myriad of ways.
 
If it is only in 3D applications it could be the sign of a slowly failing PSU. Its not supplying the graphics card with enough juice?

My previous PC it would switch itself off during gameplay, but act perfectly ok during 2D/anything else.

Do you have a spare PSU or a friends one to swap it over to check it?
 
Gunda - no problem occured before spring clean - it's what prompted said clean and PSU upgrade.

Not yet - at work ATM. Tried 3d mark last night, but couldn't put it on a loop due to only havign the free one. Will try furmark this evening and report back.
 
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