Dual Monitors -- Can't Turn Off HELP!!

Archived from groups: microsoft.public.windowsxp.video (More info?)

Hi,

I have a Dell Lattitude C840 laptop with an Nvidia video card installed by
Dell.

Whenever I plug into a LCD projector and activate my external monitor the
dual monitor feature comes on and I cannot disable it.

Some times I want to run dual monitor with the laptop (such as for
lectures), however, sometimes I want what appears on the laptop screen to be
the same as on the projected image.

I have tried going into the Display Properties and Settings to disable the
second monitor and when I do all that happens is that I go back to only
seeing my laptop's monitor and nothing on the projector. When I activate
the external monitor the dual monitor feature kicks on again.

It never used to do this and I am not sure what changed on my system.

HELP! This is making it very difficult to do my job!

Alan

Archived from groups: microsoft.public.windowsxp.video (More info?)

I would like to avoid calling Dell. Running Windows XP Professional and
the problem didn't always happen. Just recently it started. I am hoping
to get some hints as to what might be messed up.



"Jerry" <NoSpamChiefZeke@MSN.com> wrote in message
news:%233wj97wNEHA.640@TK2MSFTNGP12.phx.gbl...
> You would be better off asking Dell.
>
> "Alan" <nobody@nowhere.com> wrote in message
> news:rRVnc.9340$dr1.318227@news20.bellglobal.com...
> > Hi,
> >
> > I have a Dell Lattitude C840 laptop with an Nvidia video card installed
by
> > Dell.
> >
> > Whenever I plug into a LCD projector and activate my external monitor
the
> > dual monitor feature comes on and I cannot disable it.
> >
> > Some times I want to run dual monitor with the laptop (such as for
> > lectures), however, sometimes I want what appears on the laptop screen
to
> be
> > the same as on the projected image.
> >
> > I have tried going into the Display Properties and Settings to disable
the
> > second monitor and when I do all that happens is that I go back to only
> > seeing my laptop's monitor and nothing on the projector. When I
activate
> > the external monitor the dual monitor feature kicks on again.
> >
> > It never used to do this and I am not sure what changed on my system.
> >
> > HELP! This is making it very difficult to do my job!
> >
> > Alan
> >
> >
>
>