Hi currently my computer boots with the onboard only.
I took out my graphic card out (ATI Radeon™ HD 4600) and replaced it with (EVGA 512-P3-N801-AR GeForce 8800 GT )
I realized my PSU does not have the 4 Pin slot, So i took it out and replaced it with my old gfx (ATI Radeon™ HD 4600).
My computer did not start up after that.
I went to the store next day and bought a new psu (1000 watt+). installed the PSU / 8800 GT with the 4 pin slot, but my computer did not start up still. I took the Geforce out and put back in the ATI radeon 4600, my computer does not start also, I mean it boots up Fans are on. Motherboard has power. But i get no display.. ATM i took it out and the computer runs fine with the onboard. Any suggestions? My motherboard is a 537 U880P Motherboard (http://www.ascendtech.us/dell-inspiron-537-u880p-mother...) thanks