My favorite was finding out that bit locker was enabled on a forced update. The key was saved to the Microsoft account that was used to set up the lappy. Except, I didn't use a Microsoft account because I'm not some tech marionette lemming who needs Gates hand shoved up my ass to tell me how to use my fucking computer. So I used a local account and disabled bitlocker via bios.
Nothing was lost, but it was still a pain in the dick hole.