Hi. Well my laptop just recently began to shut itself down automatically and it happens very often now. At first I thought it could be overheating but they laptop feels fine and pretty cool. I thought it could be a programme so I did System Restore to a date WAAAAAY before the problem began and it still didn't fix the problem. The laptop suddenly went off and so I tried turning it back on using battery power and the battery itself was at least 80% full (or so the laptop said) and it wouldn't come on so then I tried turning it on with only the power jack only and it came on. So I thought to take out the battery and use only the power jack and this worked really well until it just suddenly shut off again while I was playing music. The power jack itself is bent but I've never had any issues with it before.
Laptop: Toshiba Sattelite L750
If there's anything else you need I'll be sure to post up more :)