Keypad on microwave wont work

Question

My Whirlpool Microwave MH7100XYB0 suddenly stopped working.  The light in  the interior works, but the keys don't.  The word FAIL shows on the panel.  Nothing I press seems to work.  The clock and timer wont come back on.  I tried to unplug it and plug it back in and the word FAIL reappears.