So I was having an odd issue with Avast (The taskbar icon had disappeared even though avast was still running) and I looked it up online, I read that restarting the computer can fix the issue, but at the moment restarting my computer would cause me a huge headache. The other suggested option was to run a repair on it. So I went to my add/remove programs and started up the installer/uninstaller/repair/change window.
I went to repair and clicked continue and the button greyed out and everything else became un-clickable. For a while I thought this was a strange way of it telling me it was repairing however after leaving it there for a couple of hours I started to suspect something was wrong. It wont let me close the window and when I try to end the process in task manager the repair window goes unresponsive for a couple of seconds and then nothing happens.
I'm running windows 8 (not 8.1) if that helps, I'm not even sure if this issue is repeatable, but as I said restarting this computer would cause a huge headache so I figured I'd try asking on here about it before I went through that.