i use asus eee 1215b notebook.from the beginning it had heating problem.then i went to servicing centre.after that i didn't have problems for last 6 months.i use it on table above a book so that fan get enf space.but now mypc goes just shut down.specially in ac mode.when i use battery it runs for 3 4 hrs but when i connect the ac cabble just gets power off.i used avast antivirus .it detected no virus.then i installed avira trial,it detected few threats ,i deleted.what may be the problem,in battery mode it wrks fine(but rarely gets off)but in ac mode its just power off.what might be the problem??ac plugg??but it can charge the battery fine and battery works fine,please help...