My work PC does this every time I turn it on. After 2 years it still gives me that jolt of "oh shit".

My elderly parents both have laptops with Windows 11 (don't @ me, they can't possibly learn a new OS at this point). Every once in a while they briefly throw up like 100 cmd windows. I have no clue what they are.

The amount of legitimate software that's just batch scripts is pretty amusing. I always make sure to read and understand what it's doing in that case, though