OK this may take a bit; I will start computer with built in graphics running, it will work for a couple of cold starts then try to start and shut down. I will put in my graphics card GE640, the computer will start and work fine I can restart but if I do a cold start it will try to start and shut down; so I will revert back to built in graphics; then install GE630 Graphics Card, computer will start, run fine and same symptom on cold start and the cycle continues. The following are some important additions I have made;
Added SATA Hard Drive
Added 750W Power Supply
Added 8GB Ram (I have 64 bit system)
Using HP 27" Backlit LED Monitor & ACER 24" Monitor
Anyone have any ideas?