I selected "Reset this PC" in the Windows 10 boot menu (the one that lets me choose between Windows 7 and Windows 10). I did this while my Win7 thumbdrive was inserted, with the hope that this would remove Windows 10.
However, now that I'm at the "resetting this pc" progress screen, the Win10 logo is visible, which to me means that I'm not removing Windows 10. How do I cancel the process so I can try some other way? I don't want to wait 2 more hours.
Btw I know that my actions don't make much sense as described, but they seemed a good idea at the time :)