Windows 98 printer problem?

So, I am trying to fix my grandpas computer. he has this printer, it was working before. He got a wireless mouse and everything went crazy. Well I guess my uncle managed to fix everything by reinstalling all the drivers. However it seems like the printer driver isn’t installing. I went through the steps that windows reccomended, obviously it didnt have the model available. So I went to the HP website and DL’d the driver from there. still no success. The error that pops up says, printer error. you must install a printer. I did, so I am out of ideas.