I don't know if you've ever been really sick (or just been around someone who's really sick or suffering from chronic pain), but being on chemo is a thing that completely shuts you down. I fully believe that going out to the store and buying a new laptop and getting it set up was beyond what the parent-poster's father felt capable of. Similarly, going out to the library and doing it all from a shared computer would be entirely too much. Anything that's not the well-worn familiar path would feel insurmountable.