my computer was running fine, and i took it apart and was thinking about cleaning the cpu fan, and so i took off the fan and cleaned it, after i put everything back again, i get no signal from my monitor and everything else such as power supply, memory, video card, and HD are all fine (tested it on other computers) does anyone knows what's going on with my computer????? please help, need to fix before 2morrow, or daddy will kick my f****** ass. Thanx..