Computer Shutting Down/Freezes

[SugarMan]

Ive been using my new graphics card for alittle over a month
& its been working fine no problems

Since about a week ago whenever i play games that require
good grapics Doom 3, Halo etc.
My computer just completely shuts down or just freezes after about
a 1/2 hour of playing i think its overheating but i dont know for sure

I check my CPU temperature in the BIOS & its at 40-43*c
so it cant be that

Ive got a Geforce FX5700Le 256mb on a GA-K8NS Motherboard
with 512mb Kingston DDR RAM & a AMD 64 3000+
with two aditional case fans for cooling

how can i tell if its overheating or is it another problem?

any & all help is greatly appreciated

 

[Anarchi]

If its just games that cause problems, then it sounds like your video card isnt receiving enough power (since games push video cards to the limits).

I suggest you try a more powerful Power Supply. 400watts should do the trick.


Before spending $$$, you should run memtest for a good hour to make sure your memory isnt stressing during gaming.

Go to: www.memtest.org (bootable FD or CD)

 

[SugarMan]

ive got a 400w power supply
pumping 1.5v into my graphics card but ill try that RAM tester though
thx