Thanks a lot.

I managed the computer see this device again. Wiped that file, but without success. Still does not turn on.
This device seems to be formatted and some files are missing. The SW version is 8.30. I tried to reinstall the same version via Webupdater, but it's still the same.
I also installed Maps of Central Europe through Garmin Expres, because the LM version is, but it still does not work. Garmin logo appears and go out.