Hey Guys , I upgraded my pc form windows 8.1 to windows 10 then i made a clean installation of windows 10, but when i used product key view i found that my windows 10 key different from my oem key hxxp://postimg.org/image/ftrteuxbn/ So how can i activate windows 10 with my windows oem key ? Thanks
Because The OEM Key (BIOS) is for Windows 8.1 and the current Key is Generic Key for Windows 10 Home Single Language. Windows 8.1 Key cannot be used in Windows 10.
After upgrading did you check whether it is activated ? If yes then it will again get activated once you go online after clean install.