Lenovo ThinkPad X1 Carbon 20BT User Manual page 118

6. Click the Properties button. If you are prompted for an administrator password or confirmation, type
the password or provide confirmation. Check the Device status box and make sure that the device
is working correctly. If not, click the Troubleshoot button and follow the instructions on the screen.
7. Click the Monitor tab. Ensure that the correct device driver name is shown in the adapter information
window.
8. Click the Properties button. If you are prompted for an administrator password or confirmation, type
the password or provide confirmation. Check the Device status box and make sure that the device
is working correctly. If not, click the Troubleshoot button and follow the instructions on the screen.
9. Click the Color Management tab. Check whether the color quality is correctly set, and ensure
that the other information also is correct. If you are prompted for an administrator password or
confirmation, type the password or provide confirmation. Check the Device status box and ensure
that the device is working correctly. If not, click the Troubleshoot button and follow the instructions
on the screen.
• 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.
• Problem: My screen keeps blanking when I do not want it to.
Solution:
– If your computer is preinstalled with the Windows 7 operating system, you can disable any system
timers, such as the LCD turn-off timer or the blank timer by doing the following:
1. Start Power Manager.
2. Click the Power plan tab, and then select Maximum Performance from the predefined power
plans.
– If your computer is preinstalled with the Windows 8.1 operating system, do the following:
1. Go the desktop and click the battery-status icon in the Windows notification area.
2. Click More power options ➙ Show additional plans ➙ High performance.
• Problem: When I turn on the computer, nothing is displayed on the screen and the computer does not
beep while starting up.
Note: If you are not sure whether you heard any beeps, turn off the computer by pressing and holding the
power button for four seconds or more. Then turn on the computer and listen again.
Solution: Make sure that:
– The ac power adapter is connected to the computer and the power cord is plugged into a working
electrical outlet.
– The computer is turned on. (Press the power button again for confirmation.)
– The brightness level of the screen is appropriately set.
If a power-on password is set, press any key to display the prompt for the power-on password and
then type the correct password and press Enter.
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ThinkPad X1 Carbon User Guide