Hi everyone I have a HP m8200n Pavilion. Motherboard is HT2000. It has not been able to boot up, no power to the keyboard or input signal. I do hear the hard drive spinning. I've done everything I possibly can and read everything I possibly can. I turned it on disconnected power to Mother board. Unplugged major power suppy and green light is still on Mother board. I let it set for 10 mins and green light went out. Then I plugged power to motherboard then main supply and keyboard lit up briefly I was pressing the F10 button to get into the Setup and everything died again. I really don't know what to do. Please advise. Thanks so much!!!