Sounds like you may be having formatter issues. First thing is to check to make sure the embedded nic port has not been disabled. When you turn on the printer, when the memory starts to count press and hold the green check mark button until all 3 lights come on solid. Release and scroll down to enable network if there. If not there or it says disable, then you probably have formatter issues. If there enable and then see if you can connect by network. The fact that you are having issues communicating with usb and network stopped working does not bode well.
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