"Boot into Workbench, make sure that Workbench is active (click once on the Workbench backdrop) and hit +. If your right Amiga key is working, a window should pop up, asking you to enter a (DOS) command.
If your right Amiga key does not work, select "Execute Command" from the menu, this will have the same effect."
Bingo, it´s the right Amiga key that refuses to work. The left Amiga key works, if I hold it and touch the cursur keys then the pointer starts to move !!! And if I do éxecute command´ and then ´newcli´ and use then the ctrl key + j that it acts like a return.
Thanks Christoph !! My problem isn´t solved yet but at least I now know what the problem is :-)