Friend of mine gave me his comp to fix..and im completely stumped. He bought a new DVD Burner, on top of his old, then proceeded to install it, and when he fired it up, the computer "FIRED UP". He smelt smoke, and it shut off. Well Now ive tried messing with it, took the heatsink off and the processor wasnt even locked down, and stuck to the heatsink. I fixed that bit. I checked all the wiring and everything, and I can boot up the comp, the problem is, theres no signal to the monitor. The computer stays on, and everything, just no signal.... Any Ideas? Im stumped :-/