Hi,
I have the same problem (can't switch off unless I pull the plug) for about 5 months. 2 months ago it started to crash, you switch it on and it only shows the MED8ER logo and nothing else happens. Can;t install new SW 2.0 either, it stays stuck on logo screen, it does not initialise updating procedure after releasing Power key.
Please any tips. Do I have a broken hardware? Frustrating..
Thanks
Run chkdsk/f to check your filesystem on your mede8er internal disk as suggested above.
And installing V2.0.x firmware does only work if you have a 500X2 or 400X2, not a 400X or 500X.
So that is not broken hardware, but just installing wrong firmware.
Latest firmware for the 400X/500X is 4.0.5 which you can find in the 400x/500x firmware download section:
http://www.mede8erforum.com/index.php/topic,7307.0.html