Clear and reset Windows Pending Reboot caused by updates.

To clear the pending reboot, do the following:
*Be sure to backup your registry before attempting this fix.

1. Click Start, click Run, type “regedit” and click OK
2. Navigate to HKEY_LOCAL_MACHINE/SOFTWARE/Microsoft/Windows/CurrentVersion/WindowsUpdate/Auto Update
3. Right-click the key (folder) “RebootRequired” and click Delete

Additionally, you may have to restart the Automatic Updates server. To restart Automatic Updates, do the following:

1. Click Start, click Run, type “services.msc” and click OK
2. Right click on Automatic Updates and click “Restart“