I have a Pavilion 7955. It was working fine. I did not use it for awhile and put it in the basement. When I tried to start it up a few months later, nothing. The Power supply led lights up for just a second when I plug in the power cord. That's the extent of anything. I'm guessing the power supply went bad while in the basement. I would like to try and resurrect it for my grandson. Any ideas?