Lenovo ThinkPadP50, User Manual

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To check these settings, do the following:
1. Connect the external display to your computer, and then connect the external display to an electrical
outlet.
2. Turn on the external display.
3. Right-click on the desktop, and do the following:
– For Windows 7: Click Screen resolution .
– For Windows 10: Click Display settings
➙
Advanced display settings .
Note: If your computer cannot detect the external display, click the Detect button.
4. Select the external display and set Resolution .
5. Do the following:
– For Windows 7: Click Advanced settings .
– For Windows 10: Click Display adapter properties .
6. Click the Monitor tab. Check the monitor information to make sure that the monitor type is correct.
If the monitor type is correct, click OK to close the window; otherwise proceed with the following steps.
1. If more than two monitor types are displayed, select Generic PnP Monitor or Generic Non-PnP
Monitor .
2. Click Properties . If you are prompted for an administrator password or confirmation, type the
password or provide confirmation.
3. Click the Driver tab.
4. Click Update Driver .
5. Click Browse my computer for driver software , and then click Let me pick from a list of device
drivers on my computer .
6. Clear the Show compatible hardware check box.
7. Select the correct manufacturer and model for the external monitor. If you cannot find your monitor
on the list, stop the installation of this driver and use the driver shipped with your monitor.
8. After updating the driver, click Close .
9. For the Windows 7 operating system, to change the color settings, right-click on the desktop, and
click Screen resolution . Click Advanced settings , select the Monitor tab, then set Colors .
10. Click OK .
• Problem : Incorrect characters are displayed on the screen.
Solution : Did you install the operating system or program correctly? If they are installed and configured
correctly, have the computer serviced.
• Problem : The screen stays on even after you turn off your computer.
Solution : Press and hold the power button for four seconds or more to turn off your computer; then
turn it on again.
• Problem : Missing, discolored, or bright dots appear on the screen every time you turn on your computer.
Solution : This is an intrinsic characteristic of the TFT technology. Your computer display contains
multiple thin-film transistors (TFTs). A small number of missing, discolored, or bright dots on the screen
might exist all the time.
External display problems
• Problem : The external display is blank.
Chapter 8
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Troubleshooting computer problems
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