random lock ups...


Poster Extraordinaire
I usually am fairly adept when it comes to technical issues, but alas, now is not so. My machine has been randomly locking up about once a day now. These are complete and total lock ups... no mouse/keyboard response, no CTRL-ALT-DEL, nada. Frozen.

I've updated drivers, checked for viruses and spyware, canned any old programs, ever turned off virus scanner for a day to see if there was a conflict. No dice there. So my info and part of a dxdiag is below. Perhaps someone out there can spot something amiss that I simply missed. I can provide more info as needed.

For reference, in addition to the below info, I'm running 2 Nvidia 8800 GTS cards, in SLI.

System Information
Time of this report: 8/9/2007, 22:09:50
Machine name: ROC-PC
Operating System: Windows XP Professional (5.1, Build 2600) Service Pack 2 (2600.xpsp_sp2_qfe.070227-2300)
Language: English (Regional Setting: English)
System Manufacturer: NVIDIA
System Model: 122-CK-NF68
BIOS: Phoenix - AwardBIOS v6.00PG
Processor: Intel(R) Core(TM)2 CPU 6600 @ 2.40GHz (2 CPUs)
Memory: 2046MB RAM
Page File: 753MB used, 3185MB available
Windows Dir: G:\WINDOWS
DirectX Version: DirectX 9.0c (4.09.0000.0904)
DX Setup Parameters: None
DxDiag Version: 5.03.2600.2180 32bit Unicode

DxDiag Notes
DirectX Files Tab: No problems found.
Display Tab 1: No problems found.
Sound Tab 1: No problems found.
Sound Tab 2: The file SndTDriverV32.sys is not digitally signed, which means that it has not been tested by Microsoft's Windows Hardware Quality Labs (WHQL). You may be able to get a WHQL logo'd driver from the hardware manufacturer.
Sound Tab 3: The file SndTDriverV32.sys is not digitally signed, which means that it has not been tested by Microsoft's Windows Hardware Quality Labs (WHQL). You may be able to get a WHQL logo'd driver from the hardware manufacturer.
Sound Tab 4: No problems found.
Music Tab: No problems found.
Input Tab: No problems found.
Network Tab: No problems found.
right click task bar> start menu tab > display system admiistrator tools

start> all programs > administrativ tools > event viewer.
poke arround and search for some event that happened 5 seconds before your crash / freeze. See what the computer was doing just as it crashed. it may help. I am in vista right now, not my xp partition but there is also somehting in the administrator tools for another error report type window. I will have to get back to you tomarrow as to the exact name and hwo to get there, as i am tired and its late and i just cant remember.
Those cards utilize a LOT of power and therefore give off a lot of heat. Is it possible your system is overheating?
Overheating is not the problem, I had an additional heatsink I purchased specifically when putting this thing together. Plus, I had overheating problems on a previous machine, and they always caused re-starts, not lock ups.

Besides, it always locks up while simply browsing the web, or working within Windows. It has never once locked up in a game, which leads me to believe its not related to heat or even the graphics cards.

Regarding the eventviewer, I have tried this. No error comes up.
You're right, it's not overheating (overheating would cause a shutdown).

This sounds like it could be a voltage issue or ram issue? Is your computer overclocked? Even if it isn't, I suggest upping your voltages on your cpu/chipset to try and see if that allleviates the problem. If it doesn't, it could also be a ram issue. Try checking the integrity of your ram: http://www.memtest86.com/
I had the same issue about a month or so back...and then I started having the same issue with every desktop in our office. The fix was actually pretty stupid. Make sure you have all of your Windows Updates. The Genuine Advantage Tool somehow locks you up if you don't have it downloaded before trying to receive other Windows updates.
My problem is my cell phone! I have a cingular 8525. When it is sitting on my desk and I get a call or it is updating my computer will freeze. Sometimes it will only affect my usb mouse and sometimes the whole system. Its just sitting there not plugged in to my comp or anything.
Wireless/Bluetooth keyboard and mouse? If your keyboard and mouse are disabled, obviously you would think your computer is frozen.
Usb keyboard usb mouse connected not wireless. When Im on a page that is loading and my phone rings while close to my comp, the page or file stops downloading and I lose mouse function sometimes.
Bumping because this problem has continued to the point of pissing me off again. I also ran a memory diagnostic, as recommended, and the RAM is fine. And, as I said before, it has never once frozen during a game, so it's also likely not the video cards.

Any other advice would be really helpful.
It may be your motherboard battery; this might happen if your PSU is acting up, or faulty, being it drains the battery until it can't provide any further.

Also, if it really gets bad, try resetting the machine settings to factory defaults.
Maybe this will help

[link=hyperlink url]http://forums.pcpitstop.com/lofiversion/index.php/t115284.html[/link]

How would I be able to tell if it is the motherboard battery?

One major indication is the loss of system time, including the CMOS/BIOS time. Another could possibly be sound and video 'hiccups', or even menus and text staying on screen after it should have been closed/gone/removed, for instance items in the start menu.

Could be a million reasons.
I am having the same problem as SpetzNaz, except my computer locks up during DoD and CSS only. I tried running Oblivion for the same amount of time and longer with no problems, I have placed a fan in front of my tower and low and behold no problem there. I have completely uninstalled Steam and DoD/CSS and again, no help. Checked all of my connections, and then procedded to try everything listed here on the tech help forums. Still locks up. About 3 hours ago, I was playing in the Donner server, went to stand up from prone and there I was listening to my thompson fire again and again. Had to do a hard reset to get my CPU back on-line. ANY suggestions would be helpful...