If your PC experiences a black screen after upgrading to Windows 10. Please check Step by Step Guide to solve Windows 10 Black Screen.
I found out possible solutions for the issue and the problem was with the graphics card driver issue.
Shut down your machine and start Power On. Start PC in safe mode.
I entered in safe-mode by repeatedly pressing F8 key. You have to be patience to enter into Safe mode. While entering into safe on screen you will get "Please Wait" message.
Now press Troubleshoot option.