I was trying to change my authui.dll file to edit my logon screen, but something went wrong and my logon screen is now missing, sending me to a black screen, it is impossible to get on to my computer. What should I do? The original authui.dll files are still on my computer, I copied them just incase I wanted to change my edits back, but I can't reach them as my computer can't go past the logon screen.
