HI, I have a question about the activation of win 10: Is it possible to activate win 10 pro with an win 10 OEM key after installation of win. Normally this isn't the case but maybe somebody found a workaround because reinstallation would take 2 days with my internet connection. Thank you very much in advance for your answer, Klidrack
it is with a genuine key for the edition being installed, say Pro key, edition installed Pro. To do that once OS installed, goto PC Setting, Update & Security, then Activation, click the change product key, enter your win 10 key and follow instructions on screen.
OEM systembuilder key: yes oem : dm key from another system: no You simply can establish a HWID for it and no keys needed at all