Is there a way to restore/reload a previous back up from the return to factory settings Biab 2015 Windows 10 version? I noticed it says build 7, so I assume I have 6 previous returns possibly available?

I do have my original usb disk if all else fails? Somehow, I've messed up some settings that probably need reset and I'd like to go to build 6 if available?

Thanks,

Trax