Screen went black

[Jako]

Update:
Black screen after work and all the way home.
Got home, shut the truck off and went inside not happy.
Went back out a little later, sat inside, set the ignition to RUN without truck running, system did not load, held down the two buttons about 10 seconds, heard a beep, released the buttons, and the system loaded normally with all features.
Awesome!
But what's not awesome, is now I'm worried it can possibly happen again at any time.
Booted up normally this morning.

Thanks Snwjnky and Ram Forum members.
Tried the battery disconnect - good. Read the forum posts and the radio did reset after holding down volume and tune buttons.
BUT
I did several attempts, Ram came up on screen but went black again, kept trying and finally screen came up.
And did not hear a beep.

My experience and recommendation - keep trying.