Hello! I'm currently using windows 8 Pro (64bit) for quite some time.... Before that my PC was in good state. The start up and shut down time was very fast. Since these few days my PC juz cant shut down properly. After i pressed shut down then it says shutting down then the screen goes black and it never power off it self..... the components are still running.... i have tried to wait for awhile but its still like that. How to do??