My Dell E4300 was able to connect to external LCD projectiors and TVs for the last 2 years. It was working fine just last weelk. Yesterday, it begam reporting "presentation mode is disabled" when I pressed Fn+F8 keys and only has one option "LCD only" whereas before it gave me 3 options. I am running Windows XP with Intel GMA and NVidea Graphics card. Help! I have a presentation to give early next week!