Setting up wireless after the installation of Mountain Lion

I have recently upgraded to Mountain Lion on my Mac Book Pro and am trying to set my HP Photosmart C4780 to print wireless via a USB cable.  I don't want to use WPS.  The problem is that the drivers were supposedly downloaded with Lion mountain and all of my research on the web, I agree that if I implement wireless using a USB cable, I need to do when installing the printer software.  When you try this a few days ago, the instructions I found said first to check for software updates by using the Apple app store.  I did and I got a message saying "no updates available".  After many hours trying to solve my problem, I finally gave up.  Today, however, while I was working on my laptop, I have message came up saying that the drivers for my printer HP were available.  I pressed the button install.  I tried to set up my printer with no luck.  Can someone give me some suggestions on what do I do please?  Thanks in advance.

In fact I already had on WPA.  I solved the problem and your initial solution was certainly helpful.  The problem was that by using the "Reset default" button does not seem to reset it.  I actually had to reset by a method that that is on this link.  http://h30434.www3.HP.com/T5/printer-networking-and-wireless/can-t-see-the-hpsetup-network-on-my-MacBook-Pro-on-a-C4780/TD-p/193900  I appreciate your help.  He led me in the right direction.

Thank you!

Tags: HP Printers

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