My HTC One M8's keyboard stopped showing. How can I get it to come back?

[AC Question]

My HTC One m8's keyboard stopped showing.

I tried to unlock my mobile but then my keyboard wasn't there, i have a locksreen password so i can't access my phone and get another keyboard. I tried clean cache partition, safe mode etc. but i have important data on it and i don't want to make Factory Reset, What now?

 

[gmonkey]

Had same problem. Try clicking the on/off switch 5 - 6 times. That got mine working agai n