Thanks for all the answers... I forgot to post back and moved to a new house... Just found this Wii.
The Recovery Menu says 4.1U so I assume it's USA - I don't have the original case for this board.
So I've tried to load ssmb, it doesn't worked
I tried Castlevania Pwnz disc swap, Wii freezes in the copyright message, prior getting in the main menu, so I can't do the disc swap.
Tried Mario Kart Wii, it loads! It asks to install a channel, I try to install, I receive an error message about not being able to install the channel and that I should read the instructions manual, the "home blocked" icon appear when I press the home button. IF I try the process again, mario boots, and tells that the channel is corrupted, it let me erase and then the same error, read instruction manual.
There's any hope for this Wii?
Thanks for ANY help