Lenovo 10121/90A1 [K450 ES] Manuel D’Utilisation

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User Guide

Follow these tips when troubleshooting your computer:
•  If you added or removed a part before the problem started, review the

installation procedures to ensure that the part is correctly installed.

•  If a peripheral device does not work, ensure that the device is properly

connected.

•  If an error message appears on the screen, write down the exact message.  

This message may help support personnel diagnose and fix the problem(s).

•  If an error message occurs in a program, see the Help document of this

program.

Problem: Blank screen or no image is displayed on the monitor.

Troubleshooting and problem resolution:
1.  Check to see if the monitor has been turned on; if not, press the Power button.
2.  Check to see if the monitor power cord is loose; if so, plug the power cord 

securely into the monitor.

3.  Check to see if the signal cable to the monitor is securely connected to the 

connector on the computer graphics card; if not, shut down the computer 
then connect the signal cable of the monitor securely to the connector on the 
computer graphics card.

Problem: You need to change the display property settings.

Setting display background and icon properties:
1.  Right-click the desktop anywhere except over an icon, then select Personalize 

from the pop-up menu.

2.  From here, select the appropriate options to:

•  Change the desktop background
•  Select a screen saver
•  Select Windows color options for borders and taskbar
•  Select a themes

3.  Right-click the desktop anywhere except over an icon, then select Screen 

resolution from the pop-up menu to change the appearance.