Im a civil drafter and our IT guy built me a new computer, but we cant seem to get it to stop freezing, when it freezes it turns into a broken record with what ever sound is playing, completely locks up (no mouse movement, no Ctrl-Alt-D) it forces me to restart it manually. I had a Geforce GTX275 video card and then i replaced it with a Nvida Quadro FX1700 to see if that was my issue but that hasnt fixed it. It will mostly freeze when i am zooming or panning in Autocad C3D, it will take 3 hours of works sometimes but then it can also freeze in 15 minutes. I also have noticed it freezing in the middle of the night on the logon screen with the windows screen saver going.
-Intel Core2 Quad CPU Q9550 @2.83 GHz
-4gb of ram (2X 2GB Intel Core2)
-320GB Western Digital HD
-EVGA 132-YW-E179-TR LGA 775 NVIDIA nForce 790i SLI ATX Intel Motherboard
-650w ATX PS
Any help is greatly appreciated.