Need help installing drivers

[NOTS3W]

Can someone please help me understand (or point me to documentation that will) how PnP printer drivers work?

I have an HP722C printer. HP says that Windows has all of the files so they don't offer drivers for it. I agree that Windows has the drivers because the Found New Hardware wizard that pops up on each new install, finds the drivers locally. (The wizard actually finds drivers for an HP720C and for an HP722C.) I found drivers online and added them through nLite. Now I get two sets of drivers to choose from when the wizard pops up.

If Windows can find the drivers when I let the wizard run, why can't it find them without displaying the wizard in the first place?

This is driving me crazy although it's not a very long trip anymore.

Thanks for any assistance you can share.

Ray