My worst experience with a computer involved an older version of Bessie, Windows 98SE/Millenium, and the Norton AntiVirus appropriate to those versions of Windows. Therein lies my long aversion to NAV in any form!
Anyway, Norton crashed and began snatching drivers from elsewhere in the computer, causing a massive registry failure. Basically a dead machine that wouldn't boot. Wouldn't do anything.
This happened over a weekend when my regular geek-type was unavailable, so I took Bess into the puter store first thing Saturday morning. When I think back now, there were all kinds of options we could have done at the time, but the dingbat I got insisted I should buy a copy of Windows Millenium or 2000 and upgrade. He mentioned I would need "to install a few drivers," but after that I should be back in business. I said "okay" and he installed it. I saw a desktop. I thought all was okay and took Bessie home.
Well, you all can guess what happened. Nothing worked. I spent 16 hours on the phone with Microsoft, in two conversations, rebuilding my computer. I didn't know anything about sites like this one. I was lucky to get a swift escalation to someone at Microsoft who really knew his stuff. When the exact same thing happened to my grandson's computer a couple of months later, I was able to rebuild it myself without all the drama...
That was two years ago. By early 2001, I was ready to jump ship on ME. The damned thing was more trouble than it was worth. I was all ready to buy 2K when someone cautioned me to wait for XP. I could have a copy in August. I waited and I haven't been sorry.