my friends compaq wont display anything on the monitor. i switched monitors mine wont work on hers. hers works on mine. swaped video cards, same deal. when it turns on there arnt any beeps or anything and the keyboard lights dont come on. pressing buttons on the keyboard dosnt cause beeping. it worked fine earlyer but then we turned it off and moved it. nothing was droped or anything but for some reason it didnt work after we set it up after that.