Laptop Shutsdown Immediately upon Starting Game

I need help.
What should I do or how to diagnose ?

i5 - 2450m 2.5ghz
gt 630m
6gb ram

i am dualboot with both Windows 7 and Ubuntu

Starting games like Team Fortress 2 / Left 4 Dead 2 - Shutsdown computer immediately after loading a map or even connecting to load a map. I have installed both games on Steam in Win7 and Ubuntu as well.
Graphic drivers updated in Ubuntu, I'm still newbie at using this OS.

I don't know if this is hardware or software related, most likely hardware. According to specs, the games aren't very high in requirements. I remember playing the last time, it shut down and couldn't turn on laptop for awhile, later on worked but can't turn on again until i sent to a technician, but he could turn it on there in front of me.

He sent for a reformat, that's all he did and they removed my Acer Erecovery partition... I have tried the FurMark test, it also shutdown the laptop immediately, literarily immediately as I pressed the "Go" button.


Much thanks for your time in advance.

if you try launching the games while in Ubuntu does the laptop still shutdown immediately, or does that happen only in Windows?

Hi there

Yes, it happens both on Ubuntu and Windows. I tried the Furmark on Windows. As for Ubuntu, I enter the game, click to load map and before it does, laptop just shuts down.

I am going to try Memtest and report back, also I am advised to clean the interior. Last resort is to open it myself and clean it, entire laptop. There is a youtube diy video, same model.

Thanks and kind regards.