Trouble activating Windows 10 Pro with Product key linked to MS

hello!

i had windows 7 pc, upgraded windows 10 in july 2015. after 1 year, wanted format pc , reinstall system

i installed fresh copy of windows 10 pro n mistake, couldn't activate original 10 pro product key because 10 pro n different regular 10 pro.

so, installed different copy of regular windows 10 pro, , can't activate because says legal copy linked ms account pro n (which never activated)

any idea how solve this? again, have legal product key got upgrade win 7

thanks, , greetings

press windows key + r

type: winver

hit enter

does windows 10 pro n on dialog?

if doesn't, try using chat support reactivate using windows 7 product key:

Windows / Windows 10 / Install, upgrade, & activate / PC

Traplo