Thank you for the quick response.
I installed Intel RST for intel NUC STOR_Win7_XP_184.108.40.206.
Now I get two RST icons.
1) Intel Rapid Storage Technologie; checked ok.
2) Intel RST -service, is not executed.
I restarted my laptop 3 times and waited 3 minutes between each startup to be sure Intel RST is installed and started.
So still there is a little problem with RTS -service.
I checked the Windows Update: is ok, able to update.