hi every one iv gat a serious problem maybay one of your guys can help me out ive gat a pc with an asus p5p800 motherboard p4 running xp pro.well the problem is that the pc doesnt want to restart ,when i try to restart the pc shut down completely and wont turn on again even when i press power button i have to remove the power cord from the back and plug in again for it to turn on again.iv try replacing a new power supply ,install fresh window,upgrade bios,but no luck.plz help