Lenovo K manual Troubleshooting display problems, Troubleshooting audio problems

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5.1 Troubleshooting display problems

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

Troubleshooting and problem resolution:

1.Check that 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, securely plug the power cord to the monitor.

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

Problem: You need to change 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 characters

Set resolution and colors by using Display Settings options.

Problem: Ripple on screen

Troubleshooting and problem resolution:

1.Check for devices located less than one meter from the computer such as refrigerators, electric fans, electric dryers, UPSs, 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, consult with Lenovo Service.

5.2 Troubleshooting audio problems

Problem: When you connect the headphones to the front audio output connector, the speakers connected to the back audio output connector are silenced.

Troubleshooting and problem resolution:

The front audio output connector is provided for convenience and has a priority higher than the back audio output connector. If a speaker or headphones are connected to the front audio output connector, sound is delivered through those devices and any devices connected to the rear connector become silenced.

34User Guide

31035995_IdeaCentre K UG_EN_V3.0.indd 34

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Contents IdeaCentre K User Guide Key to signs used in this manual Copyright Lenovo 2007, 2008. All rights reserved Contents Troubleshooting and Confirming Setup Chapter This chapter is organized under the following topicsFront view of the Chassis CF I/CF II/ MD Rear view of the chassisDVI 31035995IdeaCentre K UGENV3.0.indd 2008.10.20 21119 PM Speaker some models equipped with Speaker 31035995IdeaCentre K UGENV3.0.indd 2008.10.20 21121 PM Keyboard Following topics will be Introduced in this chapter InstructionRescue system and keyboard operation Installing Drivers and Software Shipped with ComputerMethod 1 Automatic Installation Method 2 Manual InstallationMain functions OneKey RecoveryFile Management File BackupConfiguring a Password PrecautionsOneKey Antivirus Scan and kill viruses stop UpdateUpdate online Update Scan and kill virusesUpdate Obtaining the latest virus package from the flash disk User Guide Chapter Using the software Help LaunchStarting the Burner Software Disc UtilityVideo Disc Slideshow DiscData Disc Copy Disc Disc ToolsTo launch the player User Guide Operation is as following Bright Vision SettingBrightness Adjustment Distance SetupTrend Micro Internet Security Launch of Trend Micro Internet SecurityScanning viruses Help and support UpgradeConfigure scanning of the specified disk Other protection functionsModify CaptureUser Guide User Guide This chapter includes the following topics RecoveryRestoring the system Cleaning up the disk Following are general methods for cleaning the components Checking for, and correcting disk errors Performing daily maintenance tasks Cleaning the computer componentsDo not do any of the following This chapter contains information on the following topics SetupSetting display background and icon properties Troubleshooting display problemsTroubleshooting audio problems Troubleshooting and problem resolutionProblem resolution Troubleshooting software problemsTroubleshooting problems with optical drives and hard disks