Thanks for your reply. How can I check if the circuit protection is the problem? The computer will not power on at all, no activity at all when the power is hit (The two LEDs on the board are lit though). I believe this is how it should work if no/incompatible AGP card is inserted, but the red AGP LED is lit on the motherboard, despite the fact that my AGP card is inserted. The card itself is compatible with the mobo and is working order. Also, can a working motherboard operate with a PCI video card and no AGP card?