GTS 250 Problem Please Help

I just bought a GeForce GTS 250 video card, and my power supply is 650 W the name of the brand is Topower, everything is well when i start my game Far Cry 2, my settings are high , i play like about 3 minutes, then my computer like crashes, and my monitor goes to sleep,and i have to shutdown my computer,any help will me great, this happens to all my games, thanks in advance, if you need more info i can tell you.

My computer is a Hp Pavilion a6707c

Join the club of the Nvidia GTS 250 Disappointed and Almost Neurotic Users, mine has been doing that randomly once a day in any game I play.

First please post all your PC's specs.

Then use GPU-Z to keep a track of your GPU's temperatures, and go play, whenever the thing crashes post the temp log that the program creates just to see if it is a heat issue.

Also check if the GPU is properly connected to the PSU and if it's well fit into the PCIe slot on the motherboard or if the fans work properly and are not obstructed by any cable.

A partial solution could be using EVGA's Precision Tool to manipulate the fan speeds of the GPU, you may set it to 80-100% prior any gaming activity and try to play for a while.

Regards

.C.

If nothing works out after doing what cefvil said, then change your PSU to a good 80+ brand like Corsai, PC P&C, Seasonic, OCZ, Antec earthwatts or cooler master REAL POWER (not extreme power). a 450W unit should be enough from any of these manufacturers.

I've never heard of that brand before, personally I'd check the PSU before blaming the GPU. the GTS needs 600w recomended and a 12v @24a if I'm not mistaken, it's quite probable that the PSU can't output that and it's causing the computer to crash when underload.