I can't connect my printer to my laptop; its not reading the driver I think, what can I do?

I have a HP D110a All-In-One Series Printer and a HP - Pavilion Laptop / Intel® Core™ i5 Processor laptop with windows 7.Well at first, i was able at first to connect the printer via USB and then made it connect wirelessely to my laptop with no problems. I installed the drivers and whatever else comes in the installation CD of the printer. However, I had to disconnect the printer from the laptop and deleted what i previously installed. And now i try to install it, but either laptop isnt reading the drivers. And when it comes to connecting, it won't read the printer through USB and won't connect wirelessley. Any help is appreciated, thank you.