I have an HP Pavilion a1742n, dual core Athlon, vista a year and a half old. The problem started with the screen locking that looked like tiny wallpaper of what was on the screen at the time. Did this twice in a few days and the next time I turned it on the fans run on high and the lights on the front light but the monitor never turns on. First I tried a graphics card vs on board, no change. Then swapped out the power supply and tested the monitor on another PC and it works fine. Tried the hard drive in another PC, works fine. Tried booting with no ram, no beeps nothing from motherboard. Tried unplugging the media card readers, no change. I am thinking either the motherboard or processor or both.
