User manual

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Troubleshooting Guide
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My monitor shows an “Unknown Resolution Mode” or
similar message.
An error message might appear if the screen resolution is set
to a number that is not supported by either the Expansion
Dock or the external monitor. Select a lower screen
resolution until the Windows display appears on the monitor.
The external monitor connected through the
Expansion Dock is flickering.
Flickering is usually associated with CRT monitors and
caused by a low refresh rate. Always try and use the
maximum refresh rate available for your monitor.
Monitor refresh rates can be adjusted as follows:
1. Position the mouse anywhere on your notebook’s
desktop; right-click and select “Properties”.
2. On the “Display Properties” screen, click the
“Settings” tab.
3. To change the refresh rate, click “Advanced” and then
click “Monitor”.
4. Select a refresh rate from the “Screen refresh rate”
pull-down list. Be sure to select a refresh rate that is
supported for the resolution and color-quality settings,
as indicated in the table above. Click “OK” on the
“Monitor” tab.
5. Click “OK” to close the “Display Properties” screen.
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