Team Fortress 2 won't load on my computer anymore?

Whenever I try loading TF2, it gets as far as the screen where it says "Loading..." with the picture of the soldier or whatever. But then after that it just goes straight to a black screen with the mouse cursor. I can't do anything except Ctrl+Alt+Delete and just close the whole thing down. Any idea what's wrong, and how i can fix it? Please help me!!

I have the Orange Box with Half Life 2, Portal, and TF2. Portal still works, I haven't tried Half Life. TF2 used to work, but it randomly started doing that.

TSC2010-04-27T16:35:20Z

Favorite Answer

You might want to check your display set-up. Many computer games run in 16-bit color mode, and the common computer mode today is either 32-bit or 64-bit color. Also, you can try adjusting your display settings in the preferences section.