Yes, I did plug the monitor into the new video graphic card. I think now that the mother board may be bad. I rebooted the computer and held my finger on some of the keys of the keyboard. I did not get any beeps. I also removed the memory. I still did not hear any error beeps. Does this mean that the mother board is bad or is there anoher way to test it. The gaphic card is a NVIDia GeForce 8400GS.