OK.. So I have a Pavilion zt1290. Out of warranty. Been working as great as it can. Went to crank it up the other day. Plugged in the power supply and, without touching it) all the indicator lights came on and stayed on. Pressed the power on button and nothing. No sound, no activity at all... Just nothing. Unplugged it and tried on battery. When I press the power on button all the indicators light but nothing happens. I have tried all the tips I found here (drain power, power reset, reset swith sticking, ...) and nothing helps. Any clues??