CoD4 is failing

Well, every time I play sometimes the screen will go black and I'll have to restart. Other times, it will go all gray like these bars and I'll have to restart.
Sometimes the game just minimizes, but when I try to open it back up DirectX fails epically. Is this because I'm on Win7 64-bit? I've tried running in XP Compatibility, but doesn't change anything.

yea lots of new games are having problems with windows 7.

I use windows 7 and cod4 works perfectly, try to update DirectX or find some help in their forum

Obviously nobody can find an answer. Try updating your DirectX, your .Net Framework. If that doesnt work time for a new computer..