Lenovo Y710 warranty Sound Problems, Incorrect characters appear on the screen

Page 67

Chapter 4. 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.

62

Image 67

Contents Lenovo IdeaPad Y710 Page Contents Read This First Read This First Integrated camera Wireless LAN antennasNovo button Power buttonGetting to Know Your Computer Computer display Touch inductive panel and Multi-media buttonsGetting to Know Your Computer AC power adapter jackVGA port Hdmi connector Specific models onlyIeee 1394 connector Getting to Know Your Computer Fan louversRight-side View TV-in jack Specific models only Getting to Know Your Computer Optical driveSecurity keyhole Battery pack Battery latch manualBattery latch spring loaded Subwoofer Getting to Know Your Computer 2nd Hard Disk DriveFront View Multi-media reader slot Getting to Know Your Computer System status indicatorsWireless device switch Bass switchBackground Lighting „ Shutting Down Your computer „ Putting your computer to SleepUsing Your Computer Adjusting the display„ Adjusting the brightness „ Switching between wide screen and normal screenUsing the Touch Pad „ Numeric Keypad Using the KeyboardFn + PrtSc/SysRq System request „ Function Key Combinations„ Touch inductive panel and multi-media buttons Special keys and buttonsMulti-media buttons ~ Using Your Computer Touch inductive panel ~„ Lenovo game zone Specific models only Using Your Computer „ 17 Numeric Keys Specific models only „ Novo button For details, see OneKey Recovery User GuideDrive in use System status indicatorsNum Lock Wireless Device Indicator Using Your Computer Caps LockPower Indicator Battery Status IndicatorSlot-in type Using the optical drive„ Inserting a disc „ Ejecting a disc„ Copying files to CDs/DVDs „ Playing CDs/DVDs/Blu-ray Disc Media„ Removing a memory card „ Inserting a memory card„ Playing CDs Using the TV function Specific models only„ Listening to music files „ Viewing photos „ Watching video files„ Watching TV Navigate ShuttleCenter menu „ Using Lenovo Remote Specific models onlyTo view your pictures Using the Integrated Camera„ Using EasyCapture To take picturesTo view your videos To record a videoUsing the HaloLighting „ Using LAN port Using the Internet„ Using modem port „ Using wireless LANSecuring your computer „ Using VeriFaceTo register your face „ Using Passwords Changing or Removing the Supervisor Password To set a Supervisor PasswordSelect Set Supervisor Password, and press the Enter key To set a User PasswordHard Disk Passwords Changing or Removing the User PasswordTo set a hard disk password Changing or Removing the HDD Passwords Removing 2nd Hard Disk Drive Using Your Computer „ Checking Battery Status Using battery and AC adapter„ Your Computer Batteries „ Using the AC Adapter „ Handling the Battery „ Charging the BatteryUsing Your Computer Using external devices Using external devices Connecting an Ieee 1394 device„ Inserting a PCI Express card Connecting a PC card device„ Removing a PCI Express card „ Connecting a VGA monitor Connecting an external display„ Connecting a DVI monitor Specific models only Connecting a computer„ Switch between headphone/SPDIF Connecting a headphone and audio device„ Enabling Bluetooth communications Connecting an external microphoneFrequently Asked Questions TroubleshootingTroubleshooting „ Display Problems™ Note „ Keyboard Problems „ a Password Problem„ Sleep or Hibernation Problems Troubleshooting Screen is blank „ Computer Screen ProblemsScreen is unreadable or distorted Incorrect characters appear on the screen „ Sound Problems„ a Hard Disk Drive Problem „ Battery Problems„ a Startup Problem Your computer does not respond „ Other ProblemsComputer does not start from a device you want Getting Help on the Web Getting Help and ServiceCalling the Customer Support Center Getting Help and ServiceGetting Help around the World „ Be Careful about Where and How You Work Safety, Use, and Care Information„ Be Gentle with Your Computer Safety, Use, and Care Information„ Carry Your Computer Properly „ Handle Storage Media and Drives Properly „ Take Care in Setting Passwords„ Other Important Tips „ 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 Display ProcessorMemory Storage deviceOptical drive Wireless featuresInterface ExpressCard slotSize Environment Power source AC adapter Battery pack SpecificationsAppendix D. Notices „ Television output notice „ Export classification noticeAppendix D. Notices „ Wireless Interoperability Wireless related information„ Usage Environment and Your Health „ Federal Communications Commission FCC Statement Electronic Emissions Notices„ Avis de conformité à la réglementation d’Industrie Canada „ Industry Canada Class B Emission Compliance Statement„ European Union EMC Directive Conformance Statement „ General Recycling Statement „ Japanese Vcci Class B StatementJapan Recycling Statements EU Weee Statements„ Disposing of a Lenovo Computer Components Appendix D. Notices Trademarks Index Index Problems