I have an HP slimline 260-a010 desktop (basically a laptop in a bigger case pretending to be a small desktop) It got stuck in an endless loop of trying to install a windows 10 update and I eventually had to reformat the hard drive which also wiped out the recovery portion of the drive. I've tried to reinstall the OS with a windows media creation tool and a disc image ISO.
I think part of the problem is the processor can only run an older, early version of windows, or perhaps a specific version of windows. I can't figure out the one that may work and there are quite a few of them.

HP support is useless and their website sucks. I tried to ask the question on their discussion forum and the form kept resetting while I was trying to fill it out.

Not sure if it's worth fixing but a new pc isn't in the budget, also not certain if buying a used pc is a safe bet. But I've been hamstrung using an mac laptop hand-me-down; I can't do anything and all their apps just suck or are too intrusive. The music app sucks, photo editing or viewing is stupid, doesn't work very well and it sucks. Everything Apple does sucks.