I had a strange issue I thought I'd share. I removed the type-keyboard and the onscreen keyboard wouldn't come up. I could get the keyboard in desktop mode to come up but when running any metro apps (or the lock screen) no keyboard. I poked around in various settings for about an hour trying to figure out what I'd turned off (and even rebooted) before thinking about re-attaching the keyboard. That worked fine so I pulled it off again. That seemed to clear the issue and the onscreen keyboard worked fine after that. It must not have detected something when I removed it the first time and it tought the keyboard was still attached. Glad I didn't have to take it back.