The fixer may have overwritten your legitimate version with a fake or one already in use and you may be able to change that if you have the original Product Key printed on the case. If you have, press your Windows key and R together and into the Open box, type regedit then press Enter. From the File menu, choose Export and take a note of the file name and location of the back up you're about to make - it may be crucial if anything goes wrong in the Registry.
Navigate in the way you would through the file system to this key:- H_KEY_LOCAL_MACHINE>Software>Microsoft>WindowsNT>CurrentVersion>WPAEvents. In the Topic pane, right-click OOBETimer, and then click Modify then change or delete at least one digit of the value and that...