After several...frustrating...hours of trying to talk them through things over the phone to get RDP working, just so I could install Docker to run some containers that didn't even work properly with networking, and having to call/text any time the machine thought it was smarter than me and rebooted because of an update, I finally drove out there, wiped it, and threw linux on it (Ubuntu 20, which serves the purposes I need).
The entire installation process took about 15 minutes because I was explaining it to my dad as I installed it. Zero headache since it was plugged in next to the router and powered on weeks ago, and the performance on the running containers makes it feel like a brand new computer compared to trying to run them in Windows.
I run a Windows desktop locally for gaming. I've heard good things about SteamOS and have been toying with switching, but I'm put off by the idea of trying to re-flash Windows if it doesn't work. Personally, I'll be happy when I no longer need Windows even for gaming.