SUBREDDIT: r/tifu
TITLE: TIFU by not knowing my password
POST: This actually happened right after I finished building my PC last year. Any ways I had gotten windows all installed and set up. All I needed to do now was log on to install whatever program I wanted on there and I would be totally done. However when I went to log on my usual password didn't work. So I kept trying. Somehow I guess when I set my password I hit the wrong key in the same way both when I set the password and when I confirmed it. Most likley my PW was completley right except one random letter was wrong and I had no clue what it might be. Since i had never even logged on there was no way I could get my PW back without some major hax. So basically that entire night of setting up windows was wasted and I had to do it again the next day.
TL;DR: 
When setting my password for windows I managed to put the same typo in both fields and had to reinstall becaus I didn't know what the typo was.