Fixing a laptop?

So not too long ago I got a laptop that the previous owner complained was not working. He complained about it freezing / crashing when he tried to play movies or do anything taxing on it. I bought it off of him for 150 bucks, and as it turns out, the problem is that the 1 inch fan in the back of the laptop does not work (thus the overheating and crashing).

So I thought no problem, just going to need to replace the fan.

Only thing is, I can't get the fucking laptop open (wierd star-shaped screws, what do I use to open this thing?) and where would I get a replacement fan?

The laptop is a Compaq Presario 900.

get some clay, take a mold of the screw heads, use that dry mold to open the screws.

or jus buy specialized tool set from home depot.

I found the type of tool to use to get the screws out, problem is now that it sucks barely fits in the screws, but I can deal with it. Attempting to get all of the screws out now...

I have no idea what the fuck I'm doing...

"I have no idea what the fuck I'm doing..." THEN WHY ARE YOU FUCKING TAKEING APART A LAPTOP.

go to fucking a professional and get it fixed or you'll fry the fucker.

yes that's right, open it up and try to electrocute yourself (oh and remember to plug the power in for full electrocution effect