Windows 7: Black Screen Crash in games, no BSOD.

Hi there, over the last few months my laptop has been frequently crashing when playing games such as Counter Strike: Source, Team Fortress 2, Starcraft 2, as well as others. I'm not exactly sure what is wrong with my computer since it should be capable of handling all of these programs.

It is Windows 7 Home Premium 64.
It is OEM.
The computer and OS Instillation are a bit over a year old.

Update your AMD Display driver =>Link
Set your Power options to Maximum performance when gaming
Power Plan Settings - Change

Should this fully fix the issue?

It could fix it

Just crashed again even though I did both of those things.

Sounds like it's just getting too hot.

What can I do to prevent this?

Clean out any dust blocking the vents/fans

Will cleaning the vent most likely suffice? If not, is there any way to clean the fan without disassembling the computer?

There is one thing that I forgot to mention that makes me think it may not be the fans.

It unusually happens on certain maps in games, or when specific events occur.