Unfortunately it seems it wasn't saving any system restores at all, so I don't have that option.

Alright I have access to the computer again under the Administration account (thanks :)). My next problem is getting back into my own account (the one that migrated from Windows 7). At the moment,...

I looked at that method and there's a problem for me. I installed Windows 10 without a disc and I do not have a USB stick with ~20gb, so it seems I can't do step 1 of option 4. Are there other...

I just upgraded from Windows 7 to Windows 10 and wanted to get rid of the login screen password and turn off UAC because I find both of them annoying. After I tried to disable the main user...