DO THIS...
On the combat arms main link on your desktop, right click and press properties. then after, click compatibility. After you should see that it doesn't have a tick in the box in compatibility mode. Press it, then press windows 95. what ever you do DON'T CLICK THE TICK BOX AGAIN. then press apply and ok. Start CA and it should work..
this is bbecause it happened to meeeeeeeeeeeeee. lol what is your computer's product?? is it samsung? is it a laptop?? post it and i can help or pm meeeeeeeeeeeee.