Need help with Graphics problem

[Zell182]

Im currently running:

Motherboard Manufacturer and Model: Foxconn 945G7MD Socket 775
BIOS Revision Number (if known): Not Known
CPU/Speed: Intel Pentium D CPU 3.00GHz
RAM Manufacturer/Type/Module Size: 2 x 1GB DDR2 667MHz Memory
CDRW/CDROM/DVD Manufacturer and Spec: LG DVD
Disk Drive(s): Manufacturer and Spec: WD 465GB
Video Card Manufacturer and Type: nVidiaGeForce 8800 GTS OC 512mb PCI-E
Sound Card: Manufacturer and Model: On board Real Tek sound.
NIC Manufacturer/Model:On board
Power Supply Brand and Wattage: RAW power 650 W
Operating System: Windows XP SP 2
Anything else you think is relevant: Nothing.

I recently brought a ATI Raedon Saphire, which whenever I would run games or applications the screen would go distorted and freeze the system. I presumed it was a fault with the graphcs card so I got a refund. I was using the on board graphics for about 2 weeks waiting for the new card to arrive. I had no problems during this time which lead to the problem coming from the GC. But I have recently brought the nVidia GeForece 8800 GTS OC and the problems have started all over again.

Im not really good with computer so any help would be greatly appreciated.

 

[worshipme]

Does this happen only when you're playing games or doing things that stress your PC? If this is the case then it could be your PSU.

 

[Zell182]

Only when im playing games. I thought it could be the PSU but its well over the requirements for the card. Should I invest in a new PSU?

 

[worshipme]

It definitely sound as though it could be a PSU prob, but maybe a driver issue as well, do you have the latest drivers installed for your video card? And could you provide a link to your PSU please, I need to see the specs.

 

[Zell182]

I cant find a link for the PSU, but I did buy it about 3 years ago. And I do have the latest drivers installed for the card.

 

[worshipme]

OK, download PC Wizard 2008, so we can monitor the 12V rail voltage under load. http://www.cpuid.com/pcwizard.php

 

[Zell182]

ALright ive dl and installed, where and what am i looking for?

 

[worshipme]

Open the program, on the left toolbar there should be a button that looks like a temperature page, click on it and take a screen shot.

 

[Zell182]

Ive taken a screen shot (im so sorry about this) but i dont know how to send it to you, wont let me paste. Is there something im missing? (sorry again)

 

[worshipme]

No need to apologize. While you have the PC Wizard screen displayed, press "printscreen" on your keyboard, then open something like Paint and go Edit>Paste. Your screen shot should be pasted to Paint. So save that and go to Imageshack: http://imageshack.us/ and browse for and select your image to host it. Then post the link here.
EDIT: BTW, you don't need to give imageshack your email address or any of your details.