Wrong Way,
problem is solved… but a little other.
I have checked the bios for the option, but there was none.
Then I upgraded the biso to level 2.60 from february 2016, also no option.
Finally I found the option “Legacy USB support”, which was enabled.
I disabled this option, and now Boot continues to Windows 10 also, if the K8055N-2 is plugged in.
Thanks a lot for your hint !
Regards, Helmut