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Win7 deactivated after installing Win 8.1 as 3rd OS
Hi!
Today I've installed and activated (legally) Windows 8.1 as third OS (XP, 7).
Then I booted to Win7 and boom, my 7 is deactivated and it doesn't accept the key!(OEM)
What can I do?
I tried to activate by phone, but without success.
Regards.