Lenovo Y510 warranty Sound Problems, Incorrect characters appear on the screen

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Chapter 3. Troubleshooting

Incorrect characters appear on the screen.

Did you install the operating system or application program correctly? If they are installed and configured correctly, have the computer serviced.

Missing, discolored, or bright dots appear on the screen every time you turn on your computer.

This is an intrinsic characteristic of the TFT technology. Your computer’s display contains multiple thin-film transistors (TFTs). A small number of missing, discolored, or bright dots on the screen might exist all the time.

A message, “Unable to create overlay window,” appears when you try to start DVD playback.

-or-

You get poor or no playback while running video playback, DVD playback, or game applications.

Do either of the following:

If you are using 32-bit color mode, change the color depth to 16-bit mode.

If you are using a desktop size of 1280×1024 or larger, reduce the desktop size and the color depth.

Sound Problems

No sound can be heard from the speaker even when the volume is turned up.

Make sure that:

The Mute function is off.

The headphone jack is not used.

Speakers is selected as a playback device.

To check the settings, right-click the Sound icon at the bottom-right corner of the task bar and select Playback from the pull down menu.

To change the playback device settings to Speakers, do as follows:

1.When all players are turned off, select Speakers and click Set Default button.

2.Click the OK button to save the settings.

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Contents Lenovo IdeaPad Y510 Page Contents Read This First Read This First Top View Getting to Know Your ComputerBattery Capacity indicators Wireless LAN antennasSystem status indicators Power buttonLeft-sideView AC power adapter jackGetting to Know Your Computer LAN portGetting to Know Your Computer Fan louvers Ieee 1394 connectorVGA port PCI Express card new card slotMicrophone jack external Right-side ViewHeadphone/SPDIF jack external Optical drive types vary by model Getting to Know Your Computer Video jackModem Port Security keyholeSubwoofer Battery latch spring loadedBottom View Battery latch manual Getting to Know Your Computer Battery packHard Disk Drive/ TV card Specific models only compartment ™ NotesFront View Getting to Know Your Computer Array Microphone built-in Wireless device switchMulti-media reader slot CIR port„ Putting your computer to Sleep Using Your Computer„ Shutting Down Your computer ¾ Warning„ Adjusting the brightness Adjusting the display„ Switch between wide screen and normal screen Using Your ComputerUsing the Touch Pad „ Numeric Keypad Using the KeyboardFn + PrtSc/SysRq System request „ Function Key Combinations„ Novo button Special keys and buttonsTouch inductive panel a~l „ Touch inductive panel and multi-media buttonsMulti-media buttons m~n Num Lock System status indicatorsDrive in use Power Indicator Using Your Computer Caps LockBattery Status Indicator Wireless Device IndicatorPlaying a CD Watching TV and DVD„ Watching TV „ Watching DVDSecuring your computer Using the Integrated Camera„ Using Passwords To set a Supervisor Password To set a User password Changing or Removing the Supervisor PasswordHard Disk Passwords Changing or Removing the User PasswordTo set a hard disk password Changing or Removing the HDD Passwords Installing Device Drivers„ Checking Battery Status Using battery and AC adapter„ Using the AC Adapter „ Your Computer Batteries„ Charging the Battery Using Your Computer ™ Note „ Handling the BatteryFrequently Asked Questions TroubleshootingTroubleshooting „ Display Problems„ Sleep or Hibernation Problems „ a Password Problem„ Keyboard Problems Troubleshooting Screen is unreadable or distorted „ Computer Screen ProblemsScreen is blank Incorrect characters appear on the screen „ Sound Problems„ a Startup Problem „ Battery Problems„ a Hard Disk Drive Problem Computer does not start from a device you want „ Other ProblemsYour computer does not respond Getting Help on the Web Getting Help and ServiceGetting Help and Service Getting Help and Service Getting Help around the World Caring Your Computer „ Be Careful about Where and How You Work„ Carry Your Computer Properly Safety, Use, and Care Information„ Be Gentle with Your Computer „ Other Important Tips „ Take Care in Setting Passwords„ Handle Storage Media and Drives Properly „ Cleaning the Cover of Your Computer „ Cleaning Your Computer Display „ Cleaning Your Computer Keyboard„ Ergonomic Information Accessibility and Comfort„ Questions about Vision? „ What If You are Traveling?„ General Tips for Maintenance MaintenanceSafety, Use, and Care Information Warranty Information Appendix A. Warranty Information„ Types of Warranty Service Warranty Service Telephone Numbers Lenovo Warranty Service Telephone NumbersAppendix B. Customer Replaceable Units CRUs Memory ProcessorStorage device DisplayExpressCard slot Wireless featuresOptical drive CameraSize Environment Power source AC adapter Battery pack SpecificationsAppendix D. Notices Appendix D. Notices „ Television output notice„ Wireless Interoperability Wireless related information„ Usage Environment and Your Health „ Federal Communications Commission FCC Statement Electronic Emissions Notices„ European Union EMC Directive Conformance Statement „ Industry Canada Class B Emission Compliance Statement„ Avis de conformité à la réglementation d’Industrie Canada „ General Recycling Statement For Taiwan„ Japanese Vcci Class B Statement Japan Recycling Statements EU Weee Statements„ Disposing of a Lenovo Computer Components Copyright Lenovo 2007. All rights reserved. U.S. Government Appendix D. Notices Trademarks CPU IndexHandling Index