I have a Windows 10 Pro install and key from a Windows 7 free upgrade. I'd like to deactivate the key, remove the drive, and install Windows 10 fresh and re-use my key (moving it from SSD to M.2 NVMe ...

So I just got a watermark on the bottom right corner of my screen saying that I need to activate Windows. This is odd but I updated video card drivers about 30 minutes ago. So I go to settings to see ...