I have a Sony Vaio VGN FS640 which I have had for quite a while now. The problem I noticed a while back is that the laptop would randomly switch off. (I don't have any virus or anything) It used to switch off on a hardware level, usually when i moved the laptop. This used to be a rather infrequent occurrence, but within the last week or so it happens almost one a day. I did a little research online and it seems to be a common problem with sony laptops caused by them overheating and shutting down. This I belive was the problem with my laptop because it used to get very hot at the bottom. Anyway I just let the laptop cool down for a min and then could start it up again.
Today however the laptop switched off and will not turn on even after i let it cool down for a couple of hrs. The AC adapter has a green light and I used a multimeter to check if it was working. everything ok there. But the laptop is completly dead, not even the charging light comes on.
I am pretty handy with a opening stuff up and fixing it, so I would like to try and fix the problem myself. (I can't really afford to send it in to store) or atleast be aware of what the real problem is so i can not get stiffed if i have to take it in. So I would really appreciate it if anyone here is fimilar with the problem and could give me any advise.