I have a Toshiba laptop running the most recent PCLOS and the screen became damaged. I hooked a Samsung 17" lcd monitor up to the VGA port and have been using happily for months. Today I tried a 19" Samsung LCD monitor and I get no display. This same monitor works fine on other computers running PCLOS. Its just the laptop. Thoughts?? I am stumped. Yes, I have tried multiple VGA cables.