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Recently I downgraded my Windows 8 Core Single Language Edition OEM PC to Windows 7 and now I need to upgrade my PC to 8.1 I've my Windows 8 Core Single Language Edition product key. I didn't activated my windows 7 because I don't have a valid key and unfortunately I don't have the Windows 8 OEM installation disc. So if I reinstall my pc with windows 8.1 is there anyway to activate it using my Windows 8 Core Single Language Edition OEM key
Optimus
Posted 2014-07-26T14:17:11.997
Reputation: 109
Possible duplicate of Windows 8.1 fresh install with Windows 8 licence, Can I use an oem windows 8 key to activate windows 8.1?
– and31415 – 2014-07-26T14:39:36.537Activate sure; Provided its installed already; just activate it; What license key did you use to install Windows 8.1 since the 8.0 license key you do have didn't work? – Ramhound – 2014-07-26T16:01:01.287