<human>: Can you condense the text into three sentences or less?

University exams, fun™ right?
I had no idea if the exam was written on paper, oral, multiple choice, nothing. It's an elective so I did study but never got really immersed in it. Nothing clicks even after I see that it'll be in a computer room. 
It was multiple choice on PC. You need your uni account login for that, from which I have two, and because security reasons, have to change both every few months. Normally I know both, or get it right after a few times.
So there I was, sitting before the monitor, trying to remember just what on earth did I change it the last time. Prof is really nice about it, tells me to call someone. But I don't know my flatmate's phone number, had to get it from the landlord. Flatmate isn't home.
Since there's no other way around it, the uni services aren't around in the afternoon either, my flat is too far to make a round trip, I ended up coming home but thankfully not getting any penalty for not participating.
Checked the password a few minutes ago, still wondering how I ended up picking something so easy yet so obscure.
<bot>: went to exam, was on PC, forgot my login, had to leave because there was no way to get the password