Laptop shutting down

I have a Dell Inspiron 1525, with Windows Vista, & whenever I'm playing downloaded games, it shuts itself off. I have contacted Microsoft, & Big Fish Games, but none of their suggestions has helped. (Safe boot, etc) Anybody got any more suggestions? I have a cooling pad beneath the laptop that runs whenever it's on. This doesn't happen on anything else that I do on here, so am completely perplexed! I need help! I've run 360 Amigo to clean out anything that needs cleaning, & so far it hasn't helped any.

 

Have you cleaned out the dust and lint recently?

http://www.laptoprepair101.com/laptop/2006/01/04/toshiba-laptop-overheating/

 

I used the air spray, & sprayed the vents out on the back, but am wondering if I need to take the back off completely & spray the inside of it out? I don't like to mess around inside much, just in case I do the wrong thing. LOL!! Thanks for the link, & I'll try it to see if that's what's going on. I think it is, because the front of my keyboard feels really warm, when it happens.

 

I took the back off & sprayed it out really good, & that seems to have done the trick. :-D Thank you so much for your help! I knew there was a good reason why I love this site!