NTFS shat itself on newly bought hard drive, from what I remember in event viewer it said something about filesystem corruption. My steam library of 500+ GBs was gone, as well as my ripped music collection (at least I had that copied to my phone beforehead)

In other instance, a family computer. It was late 2023 and some buggy update happened that made start menu and taskbar unusable. Not clickable at all, couldn't hide it either. Numeruous throubleshooting attempts later not even update supposed to fix the issue worked. I caved for linux for this PC too