I had a bigger update automatically download and install today. It said Windows may need to restart several times during the update. It has been stuck in a restart loop for several hours now. Laptop switches on, after about 15 seconds says restarting and the cycle repeats itself. Not able to get to login screen. When I try to boot from installation media I get the message: "Looks like you started an upgrade and booted from installation media. If you want to continue with the upgrade click Yes. If you want to do a clean install click No. I clicked Yes as I would like to avoid doing a clean install. Any help would be greatly appreciated.