Driver not installed for my tower??????

I was having a little printing "burp" yesterday so I opened my devices and printers from the start menu (windows 7) and I "accidentally" noticed the yellow caution sign with the ! inside of it beside, of all things, my tower (HP P-1225)? I don't get it! So I did the troubleshooting and it "couldn't find the driver" so it didn't repair the problem.

Any idea what the HECK this means and how I fix it? I'm so confused! :confused: Thanks.