Problems with AAO again HELP

My AAO got a problem again, it shuts down by itself after a certain minutes. It only reaches the acer picture and doen't continue. This has already the upgraded BIOS, what now? I'm begginning to be disappointed with my AAO, I hardly use this but still I have problems.

Help me whats wrong with my AAO again. I'm so frustrated I cant use my notebook.

 

sounds like a heating problem.
have you done a memory upgrade recently by any chance? if so, you might have misplaced something before closing it up.
I m not sure I dont remember well the BIOS, but if you get in there, is there a temperature reported?

 

Are you blocking the vents on the bottom in the way you are using it?

 

I have noticed that mine gets pretty hot if I have been using it for a while especially if it's on my lap. I bought a plastic turntable support with adjustable angle this keeps the vents underneath clear and allows proper ventialtion. Still gets pretty hot though.