https://www.sevenforums.com/windows-updates-activation/313516-win-7-home-premium-build-7601-not-genuine-3.html

Recreate the Licensing Store
1. Go to Start > All Programs > Accessories
2. Right-Click on Command Prompt and select Run as Administrator - accept the UAC prompt
3. Run the following commands in the Command Prompt window, using the Enter key at the end of each

net stop sppsvc
(wait until the service has stopped before entering the following lines)

CD %windir%\ServiceProfiles\NetworkService\AppData\Roaming\Microsoft\SoftwareProtectionPlatform
REN tokens.dat tokens.bar
net start sppsvc
slui.exe

After a couple of seconds Windows Activation dialog will appear.
You may be asked to re-activate and/or re-enter your product key, or Activation may occur automatically.
If you are asked for your Key, use the one on the COA sticker on the machine's case

Reboot and Post back with a new MGADiag report 

Other Stuff:
https://geekmontage.com/how-to-uninstall-windows-7-activation-update-kb971033/