Windows 10: I Can't Install an old USB HP PSC printer to my Win 10 Dell Desktop

I can't tell for sure, but that looks like files already installed on the PC. You wouldn't click on any of those.

You would find the driver package offered from the HP website for your printer, then right click that and run it in Compatibility Mode for Windows XP. If it is a zip file, then extract it first and then look foe a setup.exe file inside the folder.

You might want to uninstall the printer and it's current driver before trying the procedure.

 

A driver should have .inf file(s), sometimes you can just right click on appropriate .inf file and choose install. If it has all information needed it will install whole driver and it's programs.

 

The HP PSC 750 is listed in Windows 10, that would be a basic driver as in post #9
Looks to me it found and installed that.

I had a HP Deskjet 900 series slightly newer that that one, whilst the basic driver installs and works (from Windows 8.1/10). There is no full feature driver for Windows 8.1/10 therefore features were missing, useful ones like ink control and so on.

I would not waste your effort, buy a new one that does have a full feature Windows 10 driver.

 

I plugged the same PSC 750 printer into my WIN 7 laptop and within minutes it not only installed the printer, but found the newest driver for it. Thank god the free Win 10 "update" failed on that computer. I have failed to see any improvements of 10 over 7, only regressions

 

As operating systems evolve they become more complex.
It is inherent on device manufacturers to make their product compatible with the new systems.
But why should they?
Market forces dictate that it is in their best interest to just have you buy updated equipment.
Helping you keep old hardware working on new operating systems is not good for shareholders.