YellowBone

Hello, I got a really big Problem. I actually bought "Arma 2: Combined Operations" at Amazon. As I came back from the post office I just throw the DVD "Arma 2 Black Edition" in my DVD reader. My Computer totally freezes and and a blue error sreen appeared. He booted up again and at the Windows start sign he just crashed and this repeated evertime until I just took the DVD out. So here is what I tried out: I put a other DVD in. Worked. Nothing crashed. Autorun blocked. Still crashes. Save Mode from Windows. Same as allways. Im not a Computer Pro but I can do allot if someone explains me it. Im running Windows 7. thx If someone helps me ! I will try out all!