Can't network print to Dell 3330dn Laser Printer any longer

We have been printing to our Dell 3330dn laser printer right along. Last week, we had a power interruption. After that none of my computers can print to it. I have 3 Windows XP machines as well as 1 Window 7 box.  All computers can find it on the network. Its IP address is published. Dell's IP Config program pulls up that printer off the network. Each computer I get the message that document failed to print. I have reinstalled the drivers and that did not fix it either. I can directly connect to the printer via usb and it prints fine.  I have tried printing using Windows test page, as well as a text editor and also MS Word. I replaced the router incase something happened to it but no change. Any ideas?

Thanks,