Don't just shutdown "hard", allow it to finish. I suggest you review the event log and see what is possible may have been recorded. Also, the updates you mentioned maybe trying to do a inspection or scan to see if it runs OK or it really isn't done because it was running prior. DO a manual AV scan and allow it to finish, it may correct its unattended "auto-scan". Also, since there is a windows update, many times it needs to be allowed to install at shutdown as that's when it does it for a clean reboot next time, it really important not to disturb that process, as it may retry the windows update all over again and seem to be a problem, but it's not, it's suppose to be updating not only getting the update but installing it. Understand some updates are large and if you haven't used the laptop in some time, it has the chance to do so once on the WWW.
Toshiba Vista Laptop
This happened after a webroot and windows update. How can I correct this?