My 80+ year old parents don’t care about ads or AI. They just want a working PC, and W11 won’t install on the cheap machine they got a few years ago. They’re not going to buy a new one because this works perfectly fine.
And yes they tried Linux for several years, but went back to Windows because it was just too much hassle and not compatible with too many things.
It absolutely is a hardware problem.
There is nothing wrong with your device. Do not attempt to adjust the picture. We control the horizontal. We control the vertical.