I can't connect to my printer wirelessly, I have an HP 3050, please help

I recently unpdated my system from Lion to Mavericks, then changed my internet provider and obviously my WiFi name and password has been changed, also. Before I was able to print and scan wireless system but since I changed the WiFi name and password I am unable to reconnect.

Also, I wasn't able to print with my USB connection but I was able to fix that issue but I can't figure out the wireless issue.