I reinstalled Windows7 Then I reinstalled all my programs and when I reinstall vegas pro 11, I try to open program a message poped up and read Vegas Pro is not responding. It collected information and sent it to Sony. How Do I fix this problem?
That's a worry on a clean install. It won't cost much time to uninstall Vegas, delete any folders left that refer to Vegas, and then clean the registry with Ccleaner or similar. Then do a reinstall.
Did you take an image of your C: drive after the clean install and before installing your programs? If so, restore to that and try Vegas as the first installed program. If that works, keep installing again and see what (if anything) breaks Vegas.
If you didn't take an image, tut tut! Make sure that you do next time.