Computer overheating

Hello, i know i am double posting but i couldn't move my first topic and asking an admin to do that is a pain in the butt, so my computer is full of dust and in result the fans are slow, resulting in overheat, so when ever i try to do something heavy (playing metro 2033 for example) causes it to turn itself off (probably saves itself from frying) so i had an idea, i have this big rotoric fan, so what happens if i put it near the computer and turn it on on maximum power? will that chill it down? i want to know because this fan probably takes alot of electricity and i don't want to just waste it, so if that doesen't work i'll probably just turn my computer off and go to my laptop which is *sob* not for gaming... but i'll find something to do.

Hello, i know i am double posting but i couldn't move my first topic and asking an admin to do that is a pain in the butt, so my computer is full of dust and in result the fans are slow, resulting in overheat, so when ever i try to do something heavy (playing metro 2033 for example) causes it to turn itself off (probably saves itself from frying) so i had an idea, i have this big rotoric fan, so what happens if i put it near the computer and turn it on on maximum power? will that chill it down? i want to know because this fan probably takes alot of electricity and i don't want to just waste it, so if that doesen't work i'll probably just turn my computer off and go to my laptop which is *sob* not for gaming... but i'll find something to do.

Honnodenrei

Just do what everyone else does and go buy a can of compressed air, open up your PC, and blow out all the dust.

Well, to be honest i've tried, i've unscrewed the screws on the fan side plate, but when i try to pull it out gently it seems to be still connected to the computer... i don't wanna do it forcefully.