The application was unable to start correctly (0xc000007b). click ok to close the application

Question

Hello all,
I am getting this message 'the application was unable to start correctly (0xc000007b). click ok to close the application' when i start visual studio 2010 .. it was working before and suddenly start giving me this message. I have Re-install  VS2010 but still not working. I have search on internet but not found how to debug to find actual source of problem. 
Can anyone have any idea how to solve this?