I have an Inspiron 6400, Windows XP. When I open a powerpoint (or any Word document) and hit F8 to connect to the projector, the text of the document increases to 400%. The slideshow for the powerpoint won't move beyond the first page.....

This happens even if there is no projector attached and I hit F8.......

Any ideas what could be wrong, I imagine it has something to do with screen resolution?????????