Lenovo ThinkPad P70 User Manual page 114

– Press the display-mode switching key
– If you are using the ac power adapter, or using the battery and the battery gauge shows that the battery
is not depleted, press the brightness-up key
– If your computer is in sleep mode, press Fn to resume from the sleep mode.
– If the problem persists, follow the solution for the following problem.
• Problem: The screen is unreadable or distorted.
Solution: Make sure that:
– The display device driver is installed correctly.
– The screen resolution and color quality are correctly set.
– The monitor type is correct.
To check these settings, do the following:
1. 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 monitor, click Detect.
2. Select the external monitor and set Resolution.
3. Do the following:
– For Windows 7: Click Advanced Settings.
– For Windows 10: Click Display adapter properties.
4. Click the Monitor tab. Check the monitor information to make sure that the monitor type is correct. If
it is, click OK to close the window; otherwise proceed with the following steps.
5. If more than two monitor types are displayed, select Generic PnP Monitor or Generic Non-PnP
Monitor.
6. Click Properties. If you are prompted for an administrator password or confirmation, type the
password or provide confirmation.
7. Click the Driver tab.
8. Click Update Driver.
9. Click Browse my computer for driver software, and then click Let me pick from a list of device
drivers on my computer.
10. Clear the Show compatible hardware check box.
11. 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.
12. After updating the driver, click Close.
• 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.
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P70 User Guide
to bring up the image.
to make the screen brighter.