Unable to undo Extend Desktop feature

[Greg Salts]

Hi,

I am using Windows XP Professional SP2. I have a Dell Latitude D600
laptop and have added a NEC LCD screen as a second monitor and used the
"Extend My Windows Desktop onto this Monitor" feature. I seem to have a
problem when I undo this feature.

I opened the Display properties dialog and selected the Settings tab,
then selected Monitor 2 in the drop down, and unchecked the option for
"Extend My Windows Desktop onto this Monitor". I clicked on Apply then OK,
This caused the external monitor to report no signal. I unplugged the
external monitor. I then rebooted the machine with the external monitor
still disconnected.

After the reboot I verified the option for "Extend My Windows Desktop
onto this Monitor" was still unchecked, then connected the external monitor.
The monitor reported no signal, so I used Fn + F8 to show the laptop screen
on the LCD. This somehow is enabling the "Extend My Windows Desktop onto
this Monitor" feature instead of displaying my current desktop on both
screens.

How do I get the laptop screen to display on the external monitor
instead of the extended desktop?

Thank you in advance for any assistance you can provide.

Greg Salts

 

[schaffer.eric]

I am having the exact same problem with my Dell Inspiron 5150 and it is
driving me crazy. I uncheck "Extend my Windows desktop onto this
monitor", click apply, then switch modes (FN + F8) and the Extend check
box gets rechecked. I am totally at a loss. Any help would be greatly
appreciated.