my 17 inch dell monitor will not connect to dell PC monitor says in power save mode. Remove PC end no difference.remove monitor end with PC end still removed monitor clears to color self test used an ohm meter and checked continuity of all pins pin 4 and 11 were open. I looked at the description of the pin outs pins 4 and 11 are monitor id bits 2 and 0. do I have a bad cable