Miscellaneous topics that do not fit into specific categories.
Stage 2 of 2 indicates the update has been installed and Windows is just trying to clean up temporary update files from your drive.
Press and hold the power button on the case of your PC for 5 - 10 seconds to perform a hard shut down.
Wait a couple of seconds, then start your PC again, does Windows start normally?
If so, run the Disk Cleanup utility in FIle Explorer to clean the temporary update files off your drive.