So my pc was shutting down, and I unplugged an External Hard drive. When it restarted, the Start Button and Cortana didn't work. So I restarted and I got a message saying "Task Host Window microsoft\windows\plug and play\device install reboot required" is still running.
So I didn't think anything of it the first few times, and actually I've already reinstalled windows because I couldn't figure it out the first time. But now it seems that Somehow a Driver for Plug and Play must have been corrupted when I unplugged that Hard Drive while I was shutting down.
Also I noticed, the Start Button and Cortana only don't work if I have my External Hard Drive plugged in during the reboot. If I unplug it and restart, everything works fine and then I can plug it in once started. But of course I wouldn't want to always have to do that.
So what is causing this and how do I get it back to be able to restart while my hard drive is plugged in?