Just got back from a trip and despite working perfectly right up until last night, my laptop will no longer boot up properly. Its an HP nx7000 and was working great all weekend right up until I shut it down last night. Got up this morning and put it into its bag and went to the airport, took it out for the usual xray check, put it back and carried it onboard the plane with me. It was an empty flight so I had plenty of room around me and just left the bag on the seat next to me and it never moved around. Got home, plugged it in and hit the power button and now the problems start. The power button light comes on and I can hear the faint sound of the HD spinning up, but the cooling fan on the bottom of the laptop isn't spinning. Checking out the bottom on a second attempt, it seems that it will spin up very briefly but then just stop. This happens every time I try to turn on the computer. Also, the dvd drive activity light is always on and the drive itself makes this odd noise, sort of like a grinding sound but not exactly, definitely not the sound of spinning up though. During this, if I stare at the screen very carefully, I can make out the faint image of the HP logo that is usually there during startup, but then it disappears, again this happens every time I try to start up. I'm at a total loss to explain what the problem is and cannot figure what could have caused it. Anyone have any idea what it might be?