This article was previously published under Q329844
This article has been archived. It is offered "as is" and will no longer be updated.
When a lower-resolution display (such as television or older monitor) is attached to a system with the following configuration, the screen resolution in the Display Properties applet may be incorrect:
The computer runs Windows 2000.
A multi-headed display adapter is installed.
The clone-view or dual-view feature is turned on so that the secondary monitor is an exact duplicate of the primary monitor.
For example, if you attach a television with a maximum resolution of 1024 x 768 to a notebook with a maximum resolution of 1600 x 1200, after you turn on the dual-view feature, the screen resolution slider bar may only go from 640 x 480 to 1024 x 768, and nothing higher than this is available.
This behavior occurs because Windows 2000 does not support clone-view or dual-view capability if you use a multi-headed video card. The video card manufacturer may support the dual-view feature in the driver.
This behavior is by design. Windows 2000 does not support the dual-view or clone-view feature, but programmers can develop drivers that support this option.
This limitation applies to all video adapter manufacturers. Manufacturers can build support into their drivers for Windows 2000.