I haven't had to deal with any of that, but I've had Windows straight up refuse to boot multiple times and the only fix I found was to reinstall. I've now had to advise multiple people who couldn't turn on their WiFi in Windows (the switch just did nothing). I also couldn't fix that without a reinstall (not for a lack of trying). My family iMac refuses to import photos from an iPhone into Photos, failing the transfer silently. I have no idea how I'd even go about fixing that besides calling Apple and forcing them to fix it.

No man gets to deal with all of the possible computer problems, thankfully. But in my experience, most Linux problems have been fixable and I managed to fix them, while more closed OSs have left me stumped many times. I no longer believe that a computer can work without problems, so my priority is making sure that when problems appear, I can diagnose them and fix them easily.