[cl0udedth0ught]

Laptops commonly have overheating problems while gaming. Online flash games shouldn't stress them too much but games like COD4 will. I noticed that you already tried blowing out the dust inside, but are you using it on a hard flat area while gaming such as a desk? The VOUUUUU sound you hear is probably your fan working hard to try and cool the laptop down.

IMO your better off getting a desktop PC for games. Outside of that, here's what to try.

-Keep free of dust inside your laptop. (From your post it appears this has already been done)
-Monitor system temps in the BIOS.
-Use only on hard flat surface such as a desk.
-Change thermal paste on CPU/GPU.

 

[cl0udedth0ught]

I saw yesterday via BIOS the temperatures(when it did a VOUUUUUU) and they were not so high ...

What was the temp when system was idleing(at rest) and then after playing COD4?

It definately sounds like an overheating issue to me especially since it occured after playing games.

 

[cl0udedth0ught]

That temp is def way too high but im thinking that you should check it in the BIOS and confirm it because many programs that post the temp are not accurate.

To get in the BIOS, boot up your computer and look for what key to press as soon as the screen lights up for the first time. It will say something like "Press F12 to enter BIOS". (The button to push varies by manufacturer.)

This message is usually displayed in the upper right side or left side of the screen and is usually only present for a few seconds. If you miss it, you will have to restart your machine and look for it again.

You will need to do this after playing a game and once while just at idle again. Post the temps on here to confirm. If they still remain high in the BIOS then your current cooling cannot keep up with the heat being put out by the laptop.

 

[cl0udedth0ught]

Sounds like your laptop isn't up to running COD4. If it keeps overheating, you risk damaging the machine.