OPENGL BASED GAMES CRASH!!

[brew]

Hi there, I have recently bought a system which is P4 2.8GHz, 800MHz FSB, HTT etc,
PALIT Daytona Geforce FX 5600,
I have windows XP, DX 9.0b, 1 GIG of PC400 DDR ram (running at Dual Channel)
Gigabyte GA-8PENXP board.
Ok, so when I run any game which uses OPENGL, after a varying time (approx 5 to 10 mins), the screen goes blank, monitor switches off and PC locks up!)
Please help!
I disabled the support for enhanced CPU instruction sets in display properties and the games no longer crashed, but then I had no real OPENGL lighting did I??
I would be grateful of any help guys!

[al_bob]

Which driver version are you using? Did you try 44.03 from the NVidia website?

[brew]

Thanks for replying AL_BOB, I have all the latest drivers for my system ( Motherboard, bios, chipset etc, my Video Card Driver is currently the latest one from the PALIT website, it is version 4471.
I have tried using the Detonator Pack 4403 from NVIDIA, but this does not remedy the problem :-(
Games that crash (as described previously):
Quake 3, MOHAA, Return To Castle Wolfenstein, Neverwinter Nights

Games tested that work fine:
Delta Force Black Hawk Down, Unreal 2.
Hope someone has a solution before I take PC back to where I got it.

[brew]

I forgot to mention my system has on board AC97 audio, and serial ATA HDD via Silicon Image ATA controller, maybe this affects OPENGL??

[V-man]

----I disabled the support for enhanced CPU instruction sets in display properties and the games no longer crashed, but then I had no real OPENGL lighting did I??
I would be grateful of any help guys!----

That happened to me but only on Win98. 2k and NT are OK. I dont use XP.

I dont think any game out there uses opengl lights. They all use light maps.

Maybe you should use some program to test SSE and 2D now! instructions. Google for benchmarks.

[azuremagi]

I have a slightly different system and the PNY 5600 but I am running into the same exact problem. Anyone have any ideas?

i have a similar problem
i odwnloaded zoo tycoon demo and it works fine
but some action games stop on the main menu and theres squares
somone lpease help

I have exactly the same problem. My PC crashes during every OpenGL-Game after some minutes. Please help!!!

I just wanted to add that I am having the exact same problems discribed by BREW. I haven't been able to find any way to fix it. I have tried the obvious, newest drivers, etc. Any other insight would be great.

Specs:
Athlon XP 2100+
Asus A7V8X board
512 MB PC2700 DDR ram
PNY Geforce FX 5200
WinXP

Have you considered a heat/power problem?

For heat, remove the case of your computer and put a fan blowing right into the case... then play your games.

If lockup, consider additional cooling.