MP5 player won't start anymore correctly
 

Hello, some time ago I found this player nice, and I bought it off ebay: http://cgi.ebay.co.uk/ws/eBayISAPI.d...m=220383586329

At first it worked very well, I configured everything ok, set the player to german language.
One day when I started the player everything switched back to chinese but that's not the only problem. Then the screen goes red and afterwards blue with a crosshair. I think that's the calibration mode. Pushing buttons doesen't help. I don't know what to do to get that player back to normal, does anybody have a solution for this? I know it can be solved somehow. The first time that error appeared I brought it to a shop and they fixed it instantly by pushing buttons.

Thanks in advance.