I start my computer and everything works fine except my graphics card. I know the graphics card is off because the fan doesn't start. I know Windows loads because it plays that intro sound and I can turn off the computer using the keyboard even though I can't see the anything on the monitor.

However, sometimes when I turn my computer on the graphics card starts up. I conclude that the graphics card starts up because the fan turns on. But when that happens, Windows does not load.

I've narrowed the problem down to the graphics card, power supply, power supply wires not plugged in properly, or motherboard.

Any computer technicians that can give me some advice? Also, does anyone have any links on how to properly connect the power supply wires to all the different parts? Thanks!!!