I have this HP Pavilion a705w and when I press the power button all the fans come on and the lights come on but only for like 3 seconds and the system restarts repeating tperforming the same process. could someone give me clue as to what could be wrong. my son knocked the case over and that's when this problem began. I tested the ram in another system it's good and the hard drive works also. I'm thinkin it's the processor or motherboard though. any help will be appriciated. thanks.