Error 0xc0150002 on initializing PowerPoint

I met an error while I was about to load PowerPoint.
The error stated: The application failed to initialize properly (0xc0150002).
Click OK to terminate the application.
Thinking about the error, I removed and added the PowerPoint again.
But still the same error existed.
I tried to reboot my computer, but nothing has changed with the error.
I need some help.
