Lenovo 3000 H230 User Manual

Also see for 30221CU - H230 CORE2DUO 500GB Desktop: Safety and Warranty Guide User manual Hardware replacement guide Notice Notice

User GuideProblem: Ripple on screenTroubleshooting and problem resolution:1. Check for devices located less than one meter from the computer such asrefrigerators, electric fans, electric dryers, UPSs, regulators, fluorescent lampsor 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 ProblemsProblem: No sound from integrated speakersTroubleshooting and problem resolution:• Adjust the windows volume control — Double-click the speaker icon in thelower-right corner of your screen. Ensure that the volume is turned up and thatthe sound is not muted. Adjust the volume, bass, or treble controls to eliminatedistortion.• Reinstall the audio driver• Disconnect headphones from the headphone connector — Sound from thespeakers is automatically disabled when headphones are connected to thecomputer’s side-panel headphone connector.Problem: No sound from headphonesTroubleshooting and problem resolution:• Check the headphone cable connection — Ensure that the headphone cable issecurely inserted into the headphone connector.• Adjust the windows volume control — Click or double-click the speaker icon inthe lower-right corner of your screen. Ensure that the volume is turned up andthat the sound is not muted.5.3 Troubleshooting Software ProblemsProblem: You are unable exit a running program normally.Troubleshooting and problem resolution:1. Open the Task Manager window by pressing Ctrl, Alt and Delete at the sametime.2. Select the Application tab, select the problem program, and then click the EndTask button.31039398_3000 H_UG_EN_V2.0.indd 29 2009.7.22 3:30:10 PM

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