Whenever I switch my D510 to dual display mode, a problem occurs in any MS Office applications (MSWord, Powerpoint) in which the screen zooms to the maximum level possible (500% in MSWord). It only does this when I run any dual display configuration such as a projector or external monitor. In addition, when I'm in this mode with an IE browser window open, the left SHIFT key acts like a "Back" button. When I revert to single display mode on the notebook, this problem with the SHIFT key remains until I reboot.

Any ideas would be appreciated.

Thanks