Lenovo ThinkPad T420 User Manual page 238

– Check the monitor type and, if necessary, update the driver by doing the following:
For Windows 7:
1. Connect the external monitor to the monitor connector, and then connect the monitor to an
electrical outlet.
2. Turn on the external monitor and the computer.
3. Right-click on the desktop, and click Screen resolution.
Note: If your computer cannot detect the external monitor, click the Detect button.
4. Click the icon for the desired monitor (the Monitor-2 icon is for the external monitor).
5. Click Advanced Settings.
6. Click the Monitor tab. Check the monitor information window to make sure that the monitor type
is correct. If it is, click OK to close the window; otherwise do as follows.
7. If more than one monitor type is displayed, select Generic PnP Monitor or Generic Non-PnP
Monitor.
8. Click Properties. If you are prompted for an administrator password or confirmation, type the
password or provide confirmation.
9. Click the Driver tab.
10. Click Update Driver.
11. Click Browse my computer for driver software, and then click Let me pick from a list of
device drivers on my computer.
12. Clear the Show compatible hardware check box.
13. Select Manufacturer and Model for your monitor.
14. After updating the driver, click Close.
15. Set Resolution.
Note: To change the color settings, select the Monitor tab, then set Colors.
16. Click OK.
For Windows Vista:
1. Connect the external monitor to the monitor connector, and then connect the monitor to an
electrical outlet.
2. Turn on the external monitor and the computer.
3. Press Fn+F7 to change the display output location to the external monitor.
Note: After pressing Fn+F7, you will need to wait for a moment before the image appears.
4. Right-click on the desktop, and click Personalize.
5. Click Display Settings.
6. Click the Advanced Settings button.
7. Click the Monitor tab. Check the monitor information window to make sure that the monitor type
is correct. If it is, click OK to close the window; otherwise do as follows.
8. If more than one monitor type is displayed, select Generic PnP Monitor or Generic Non-PnP
Monitor.
9. Click Properties. If you are prompted for an administrator password or confirmation, type the
password or provide confirmation.
10. Click the Driver tab.
11. Click Update Driver.
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