original title - Windows Activation
Recently my hard disk got corrupted and I gave it to a local laptop repair center, they formatted my hard disk and everything was lost They somehow installed Windows 10 Pro on my laptop which doesn't look genuine as it keeps giving me activate windows popup.
Originally I had windows 7 home basic on my laptop which was genuine(came from OEM) and later I upgraded to Windows 10 home.
The sticker at bottom of my laptop showing product key is still there. Is there anyway I can restore my genuine windows without losing data. I have already tried "change the key" oprion it says the key isn't working. Please help!!