Lenovo ThinkPad T420 User Manual page 239

12. Click Browse my computer for driver software, and then click Let me pick from a list of
device drivers on my computer.
13. Clear the Show compatible hardware check box.
14. Select Manufacturer and Model for your monitor.
15. After updating the driver, click Close.
16. Set Resolution and Colors in the Display Settings window.
17. Click OK.
For Windows XP:
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 Properties to open the Display Properties window.
5. Click the Settings tab.
6. Click Advanced.
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 Default Monitor.
9. Click Properties.
10. Click the Driver tab.
11. Click Update Driver. The Hardware Update Wizard appears.
12. Click No, not this time, and then click Next.
13. Select Install from a list or specific location (Advanced), and then click Next.
14. Select Don't search. I will choose the driver to install, and then click Next.
15. Clear the Show compatible hardware check box.
16. Select Manufacturers and Models for your monitor.
17. After updating the driver, click OK to close the Properties window.
18. Set Colors and Screen area in the Display Properties window.
19. Click OK.
• Problem: The screen is unreadable or distorted.
Solution: Make sure that the monitor information is correct. (Refer to the "Solution" for setting a higher
resolution on the external monitor.)
Make sure that the appropriate monitor type is selected. (Refer to the "Solution" for setting a higher
resolution on the external monitor.)
Make sure that an appropriate refresh rate is selected 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.
.
Chapter 10 Troubleshooting computer problems
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