I already tried everything but nothing worked to fix this problem.
I think this wouldn't be so hard to Jephree fix since I saw him helping a guy with the same problem, but the fact is that he has a diferent graphic card so I can't use that solution.
If Jephree can't help me atm, do anyone know how to fix that problem?
I have a nVidia 8600 GT.

The link to Jephree's solution with a Dell comp is this:
http://www.d-a-l.com/help/pc-games/5...-computer.html



EDIT: I'm trying to install my latest graphics driver atm.

install latest graphics driver

I tried but didn't work.
On nVidia website it says I have the lastest one.
I wonder if I download the wrong thing or such...
Could you tell me the exact place I must go to fix it?

Drivers - Download NVIDIA Drivers

Uninstall any old driver before installing any new driver.

start > Control Panel > Add or Remove Programs > Nvidia > Display


If that doesn't work:

Read the post HERE for a few diagnostic ideas and post back any relevant data.

I'm sorry for taking long to answer.
I think I will check the other post later when I re-install my windows my sister did a lot of weird things here...
Thanks for helping.