I have a problem with my computer. When i switch it on its working but no signal is coming to the monitor. I've tried another monitor another RS232 cable (video cable), i've tried another graphic card, i've double-checked all the connections inside the computer but still in vain. Otherwise everything else seems to be just fine. The HDD is working, the CD and DVD ROMs are working the mouse and the keyboard are working as well. What i'm thinking is that either the motherboard or the CPU have some kind of problem. My motherboard is ASUS P4500-MX / 963SIS. Can somebody give me any clue. I will really appriciate any help given.