Working on a Sony Vaio PCV-200. Machine worked fine once after a move then when turned on goes thru post, hard drive light comes on but monitor does nothing. To test monitor I hooked up laptop to the monitor it worked fine. When I attach the monitor's data cable to the sony though the light on the front of the monitor imediately turns from green to amber. I installed a differant video card after the laptop test but had the same results. Anyone ever heard of this?