A:Answer The printer probably changed IP addresses, which happens if set to auto IP. Change it to manual to statically set an IP address. Print out a network summary if you want to know the current settings. It will look something like 192.168.1.16 and the subnet mask will probably by 255.255.255.0 or so. If it asks, set the DNS to 8.8.8.8 and 8.8.4.4. These are Googles DNS servers and are reliable and easy to remember. Your gateway is the routers IP address, which will look something like 192.168.1.1. If it is 192.168.0.1 then make sure the IP of the printer is 192.168.0.x (x is the static number you assign- try 242 or something high up, to avoid interference with the DHCP pool.