Okay so I have a dell d610 - and when it is on it runs perfectly mine so much so that I can play a game online sync photos and download from iTunes - but when it get shut down if doesnt come back on for at least 3 hours and at most a whole 24 hours. The battery light just does a slow green flash and when I check it it says its fully charged. When I press the power button the little indicator lights will come on and the screen gets ready then after like three seconds it all goes off again. So far this is the longest it's been off which is going on two days now. I'm not sure if I explained clear enough but any help would be greatly appreciated.