(xxxxx-3V66T) that key means you don't have to use one for new installs, that's a generic key that means activation's tied to the hardware (hwid) you can install from that media you used as many times you want without having to enter any key at all, off course as long as it's the same hardware it was installed on
Yes i know that but how can activated automatic with RETAIL GENERIC KEY 3V66T when before was activated with MAK key tha i can not undertand?
Clearly you got a digital entitlement,no matter how, and MS server remembers it. After all their problem is to force the users to switch to W10, looking like it was a favor and not a trojan horse
The only way to assure that you have a clean activated copy is to do a clean install and then verify that you have a digital entitlement. Additionally there is no way to retrieve your product key from the screenshots so blanking out portions just gives less info to those who may be attempting to help.