Trying to reinstall Operating System but get error msg?

My mother has a Gateway, when she turns it on after the BIOS screen a black screen pops up. It says "Error while initialization the NIC. So now I'm trying to reinstall the OS but when it gets to the "Gateway Recovery Management" screen it give me another msg "One of the services DiskPart users returned a failure. ErrorCode=3 The system cannot find the path specified". And then it tells me to shut the pc down or restart which starts the process all over again.