Why has the Android keyboard stopped working on my Nexus 7?

[AC Question]

Why has the android Why has android keyboard stopped working on my Nexus 7?

I cannot use the device as I have no keyboard

 

[B. Diddy]

Welcome to Android Central! Are you stuck on the lockscreen and can't enter your password? Or are you on the homescreen already? If the latter, try installing another keyboard, like Fleksy or Swype, then make that the default.