Nokia Dbox2 2xI doesnt boot, nothing on LCD, some logo on TV

[Znida]

I got this dbox from a friend (i dont know where he got it), without any instruction manuals... When I turn it on, nothing hapends. LCD stays black, but in about 30 seconds on TV it appeart D-Box logo for a few seconds and then turns off. and then logo apears again in 30 seconds (it loops). Again LCD shows nothing. But once it displayed "Fehlercode UD4" i pressed OK and now it doesnt show enything again.

I dont know what was hapening with this unit. I have Nullmodem and a network crossover cable.

I dont know what to do, i am total newby in this.

Help please.

[DieMade]

Your previous posting was moved to "Newbie Forum" - please stay there for such questions.