How to connect my dell inspiron to projector with vga cable

[truckdriver2]

I connect my dell inspiron laptop to my PD1oo projector with a vga cable. The projector does not recognize the laptop

 

[Guest]

There should be a Function key that changes the video output on the laptop to the external VGA connector.

 

[truckdriver2]

I have a dell inspiron1100. I don't find such a key.Thanks

 

[Guest]

Fn +F8 See page 49 of the users manual. http://support.dell.com/support/edocs/systems/ins5100/en/i1100-om.pdf