Lenovo 4749 [B545] Personal Computer User Manual


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User Guide
Solving Problems
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program’sdocumentation.
5.1 Troubleshooting Display Problems
Problem: Blank screen or no image is displayed on the monitor.
Troubleshooting and problem resolution:
Check that the LCD screen has been turned on; If not, press the LCD On/Off
button to turn on the LCD.
If still cannot solve the problem, contact to Lenovo Customer Service.
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colorsandappearanceoptionsforiconsandtext
•SetresolutionandcolorsintheDisplay Settings options
Problem: Ripple on screen.
Troubleshooting and problem resolution:
1. Check to see if any of the following devices are located less than one meter
from the computer: refrigerators, electric fans, electric dryers, UPS systems,
regulators, fluorescent lamps or other computers that may be generating
magnetic interference.
2. Move any interfering devices away from the computer.
3. If the problem persists, contact Lenovo Service.
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