I have a hp m9040n running vista home premium. The problem started when I started using my big screen for a monitor. I decided to do a factory restore and when I did pc crashed halfway through. now I get no display to monitor any monitor. I have upgraded the power and replaced graphics card with same kind still nothing. so I replaced motherboard and processor with same replacements still nothing. iv tried resetting cmos battery and using the jumpers. pc turns on but no display, monitor immediately goes to sleep. I have no idea why pc is not outputting to monitor. im no computer expert and don't know anymore options please help. the fact that I was running my recovery discs when this happened may be contributing to the prob but i have no idea.