Cant Alt-tab out!

When im in combat arms if i get out of the screen i cant get back in. im not really sure what happens but if i get out and try to click back into combat arms it looks like its loading back into combat arms but it isnt. can someone tell me whats wrong?

i got windows xp if that helps and i got a good cpu so dont say its just a bad cpu

CPU specs? For all we know your definition of good could be way different.

Ram
Processor
Video Card

Btw, it could be cause your on windows XP

I can't alt tab either. Never could. On this laptop anyway.

you can always just run CA in windowed mode
so you dont have to alt tab out