use the printer software CD to reinstall the printer software.
Computer's wireless card is set to the wrong wireless profile
A
wireless profile
is a set of network settings unique to a given network. A single
wireless card might have several wireless profiles (for example, one for a home
network and one for an office network).
Open the configuration utility for the network card installed on your computer and
verify that the profile selected is the profile for the printer's network. If not, select the
correct profile.