Since I only use ccleaner to make changes to my computer I think it has done something with the windows 10 product key. I now have a watermark to "Activate Windows" on the display. I have tried to get into regedit to see if I can find my product key but it comes up with I need to load the edge browser. Dont like edge browser and don't want to load it. Not sure how to get my product key back so I can put it back into the computer?