The problem you’re describing is one that happens to mine about twice a month on average.It seems to malfunction whenever “auto-Start” functions are enabled for removable devices in my computer.
I’m using Windows so I’m not sure if this will help but…here it goes:
step 1:With display facing you & on the left, Hold in BOTH volume buttons w/ both thumbs (continue holding them in while performing step 2)
step 2:With left index finger hold in power button (continue holding it in while performing step 3)
step 3:With right index finger hold in menu button (not the center select button) HOLD ALL FOUR BUTTONS IN AT LEAST 15 SECONDS or UNTIL THE DISPLAY COMES ON!
I hope this works for you. Not sure why it works for me.
P.S. If it doesn’t work at first just give it another try.
Seems like I had some luck one time doing this…1st: slide the hold switch on and…2nd: hold in the POWER & VOLUME DOWN buttons at the same excact time! (hold them in for at least 15 seconds)