I have a 5E code on my microvave

I have a 5E code on my microvave

I have a 5E code on my oven it will not work it has power the inside light goes on bu nothing works

ANSWERS:

Keyboard error code. Unplug it for 30 minutes to allow it to reset then try plugging it back in.

"sometimes it works. Most times it says set date/time then quits .

Other times it goes to an ""SE"" message & stops & freezes!"