Windows 7 call of duty 4 and call of duty 2

Many call of duty players have this problem , When they open call of duty 2 , call of duty 4 and such , they get an error that the program stopped working.
I had also that problem , and for people that dont know i will tell you the solution to get it fixed.
Call of duty 2 exacly is an old game , that windows 7 don`t support it , but the solution is to add a headset,microphone or any device that connects with sound.
This will get your call of duty working , remember , thats only for windows 7.

Greetings , giorgos.