Solved Shutdown hanging on 'Installing update 3 of 4'

Hi, new member here, sadly had to sign up to ask for help with a problem with updating.

Today I received a prompt to install 4 important updates. These seemed to download OK (total 32MB). I don't know what exactly was included in these updates, I just clicked on Install and carried on with other tasks and operations.

After a little while I got the usual prompt to restart my computer to finish installing updates. I did this, the shutting down message appeared followed by 'Keep your PC plugged in until this is done. Installing update 3 of 4'.

This was at 1536GMT. It's now 2223GMT in my timezone and I've still got thie same message displayed with no sign of any further progress. Should I disconnect the main power supply regardless of the message, or is there another step to take? I vaguely recall this happening when I had Vista, which I eventually abandoned.

(Registered and sent from a borrowed laptop).

Just hold power button in for 5 seconds.

Boot to Windows.

Delete all contents in C:\Windows\SoftwareDistribution\Download\

Temporary disable antivirus if there is a 3rd party one.

Try WU again.

@ Masterchief

Thanks for your help, seems to have worked.