View Full Version : SLI 7800gt, computer freezes only when playing games

06-13-06, 04:46 PM
I bought a computer off newegg, it's specs are at the bottom of this post.

Ever since I got the computer it's had problems only while playing games. When playing World of Warcraft the computer would, after playing for a bit, just freeze, first the screen/controller/keyboard will freeze and after 5 seconds the mouse will freeze too. Then after a short bit, it will unfreeze, the game will show everything that happened while frozen in fast speed then catch up to real time. In addition, while frozen, the speakers will give a looping noise. Plus, once unfrozen, the game will show some artifacts around the screen sometimes.

An example of it happening is here: Youtube video of game freezing (http://www.youtube.com/watch?v=Y9k5LWmSSIQ)

At first I thought it was a WoW problem, because their message boards were filled with people having similar problems. But I eventually stopped playing WoW and then noticed it happening in guildwars too. I was told that it was lag and that it was a network problem (although the other computers on my router don't give the same problem).

I then tried out the half-life 2 demo recently. It gave me the same problem so it's most likely not a network problem.

The weird thing though, is that it doesn't happen when not playing games. The computer is mainly used for video editing, and can do things such as edit HD movies and can manipulate green-screen technology, etc. Yet it only acts up while playing video games.

I tried contacting nvidia but their support page doesn't let me register to ask my question, so I'm posting here. It's not a temperature problem because the temp doesn't go pass 60 while playing. I've tested the memory, and I've also tried out just about every driver that has SLI support. (currently using the newest beta drivers released last month) Hope someone can help.

My Computer:
Proccessor: Athlon 64 X2 4200+
Memory: 1GB (2 x 512MB) CORSAIR XMS
Video Card: 2x NVIDIA Geforce 7800GT Video Cards
Soundcard: Realtek ALC850, 8-channel CODEC; Audio Sensing and Enumeration Technology

Here's a link to the computer with all of it's specs: http://www.newegg.com/Product/Product.asp?...N82E16883102662 (http://www.newegg.com/Product/Product.asp?Item=N82E16883102662)

I was using the temp monitor inside the nvidia control panel, tried using the rivatuner monitor. Noticed that it stays at about 56-58 degrees and only hits 63 when the games freeze.

06-13-06, 04:53 PM
Make sure the AMD X2 CPU driver is installed. You can get it here:


Direct links:

http://www.amd.com/us-en/assets/content_type/utilities/amdcpusetup.exe (XP-32)

http://www.amd.com/us-en/assets/content_type/utilities/amdcpusetup.exe (XP-64)

06-14-06, 02:56 AM
I have had the best luck with drivers 84.21 ,and it could be a power supply problem ,people don't like hearing that always blameing the power supply,but there has been problems with the Antec power supplies when running SLI,Ever Antec I owned was not powerful enough to run my SLI setups even though looking at the spec's it should, but when I was running a antec 550w I would get frezzing ,random reboots and will playing a 3D game it would just drop out of the game and go back to windows,so IMO I would try a different power supply ,The OCZ PowerStream 520watt was a good one ,and there lots of others ones that are good ,just make sure it has a true 35amps of power or more on the 12v rail ,a lot of power supplies will have spec's of 19amps on each rail but is not able to put out the true 38 amps,and that is were you run into problems.

06-14-06, 02:48 PM
I had that problem with some Corsair XMS sticks but it only happened when overclocking them too high. The symptoms were exactly as you describe. My sticks were 2x1GB though, but they were Infineon IC's, CE6 I think, and the problem is well known.

06-15-06, 10:43 PM
Already had the AMD drivers.

Don't want to check how it is with a new power supply just yet, want to leave getting new hardware out as a last option. In which case, I think I'm covered by warranty.

Hmm how do you overclock/underclock memory? I don't think my memory is overclocked (seeing as how I don't know how to do it) but the computer did come to me with everything pre-installed so they may have played around with some stuff before sending it to me.

Thanks for the help so far guys. :D

06-18-06, 09:52 AM
Try running one video card at a time. Hopefully you'll find a bad card, replace it and be in SLI heaven. :)

06-23-06, 09:28 PM
Try running one video card at a time. Hopefully you'll find a bad card, replace it and be in SLI heaven. :)


Tried that, now where both are enabled it gives the lockups. When only the first is enabled it still lockups. But when only the second card is enabled it works.

Now, does that definitely mean that the first card is defective or can there still be other causes affecting only that card?

Also, as a side problem, my usb xbox controller that I use to play games has a tendency (only on this computer) to randomly stop working, then after a few seconds start working again. Though, when I go into control panel > game controllers > properties, and keep that open while playing, the controller doesn't act up at all. Any idea as to what's up with that?

Thanks for all the help so far. :D