Games put a lot of stress on laptops because of the amount of CPU time and the amount of ram that they require. As a concequence the laptop will use more electrical power and generate more heat.
These are the worst conditions possible for a component that is on the verge of failing.
Sometimes laptops will show bios screen still as it uses the minimum of all mentioned above.
The first thing you need to do is check your ram. If you have 2 sticks, try it with 1 then the other then try each in the other slot. If you have one stick of ram then you will need to get hold of another stick to test with.
You could also try downloading and burning a Ubuntu live cd from here - http://www.ubuntu.com/desktop/get-ubuntu/download select the try option and it will work entirely from the cd without installing anything to your hard drive, if that is able to load then you may well have a faulty hard drive or corrupted windows install.
If you have no luck with that, the next step is to take it to a professional for fault diagnosis and repair.
I hope this info is of use to you!