Do all the fans spin? Is your monitor plugged in? Is everything plugged in? Please give more detail. Did you build this PC yourself? Just take us through step by step so we can identify the problem.
i'm gonna assume u mean ur computer turns on but ur monitor dose not get a signal. check the cable to see if both sides are connected properly , try a different monitor. try reseating ur ram. that is the best guess i can make form the info provided
