I don't know what kind of laptop you have, but I know there is a known issue with the Vista Operating Systems where the external displays will not delay or will display with the resolution incorrectly, if the notebook is booted with the lid closed or if the lid is closed soon after boot. See manufacturer FAQ section to learn how to resolve the issue. (You might read about TMM) When you close the lid on your mobile PC- Windows can shut down, do nothing, or enter a power saving state. Sleep or Hibernation. You'll have to check your manufacturer instruction booklet to adjust these controls.

__________________
Celestra