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Lenovo Y730 manual „ Sleep or Hibernation Problems, Computer enters sleep mode unexpectedly

Models: Y730

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Lenovo IdeaPad Y730 UG V1.0_en.book Page 62 Friday, June 27, 2008 6:06 PM

Chapter 4. Troubleshooting

Sleep or Hibernation Problems

The computer enters sleep mode unexpectedly.

If the processor overheats, the computer automatically enters sleep mode to allow the computer to cool and to protect the processor and other internal components. Check the settings for sleep mode.

The computer enters sleep mode (the sleep indicator turns on) immediately after Power-on self-test (POST).

Make sure that:

The battery is charged.

The operating temperature is within the acceptable range. See “Specifications” on page 120.

If the battery is charged and the temperature is within range, have the computer serviced.

The critical low-battery error message appears, and the computer immediately turns off.

The battery power is getting low. Connect the AC adapter to the computer, or replace the battery with a fully charged one.

The computer does not return from sleep mode, or the sleep indicator stays on and the computer does not work.

If the computer does not return from sleep mode, it may have entered hibernation mode automatically because the battery is depleted. Check the sleep indicator.

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Lenovo Y730 manual „ Sleep or Hibernation Problems, Computer enters sleep mode unexpectedly

Contents

Lenovo IdeaPad Y730 Lenovo IdeaPad Y730 UG V1.0 coveren2-3 If your product is not working correctlyEnergy Star model information Page Explanation of Hard Disk Capacity Page Contents Appendix B. Customer Contents SafetyAppendix a 106Iii ContentsTop View Getting to Know Your ComputerComputer display Wireless LAN antennasPower button Getting to Know Your ComputerLeft-side View AC power adapter jackVGA port Getting to Know Your Computer Fan louversRight-side View Security keyhole TV-in jack Specific models onlyFront View Bass switch System status indicatorsWireless device switch Bottom View Subwoofer Getting to Know Your Computer Battery latch manualBattery latch spring loaded 2nd Hard Disk Drive Specific models onlyƒ Wireless LAN Card compartment „ Shutting Down Your computer Using Your Computer„ Putting your computer to Sleep Using Your Computer Using the Touch Pad„ Numeric Keypad Using the Keyboard„ Function Key Combinations Fn + PrtSc/SysRq System request „ 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 „ OneKey Rescue System button „ Copying files to CDs/DVDs/Blu-ray Discs Using the optical drive„ Playing CDs/DVDs/Blu-ray Disc Media Using memory cards „ Removing a memory card Using the Integrated Camera„ Inserting a memory card „ Using LAN port Using the Internet„ Using wireless LAN „ Using modem port „ Attaching a Security Lock Optional Securing your computer„ Using VeriFace „ Using Passwords To set a Supervisor Password Select Set Supervisor Password, and press the Enter key Changing or Removing the Supervisor PasswordTo set a User Password Using Your Computer Changing or Removing the User Password To set a hard disk password Using Your Computer Hard Disk PasswordsChanging or Removing the HDD Passwords Using Your Computer Installing Device Drivers „ Your Computer Batteries Using battery and AC adapter„ Using the AC Adapter „ Checking Battery StatusUsing Your Computer „ Handling the Battery „ Charging the BatteryUsing Your Computer Connecting a Universal Serial Bus USB device Using external devicesUsing external devices Connecting an Ieee 1394 device Connecting a PC card device „ Removing a PCI Express card „ Inserting a PCI Express card„ Connecting a VGA monitor Connecting an external display„ Connecting a DVI monitor Specific models only Connecting a computer Specific models only Connecting a headphone and audio device „ Switch between headphone and S/PDIF Connecting an external microphone „ Enabling Bluetooth communications Connecting a Bluetooth deviceFrequently Asked Questions TroubleshootingWhere are the recovery discs? Troubleshooting„ Display Problems TroubleshootingMy screen goes blank while the computer is on Number appears when you enter a letter „ a Password Problem„ Keyboard Problems Forgot my passwordComputer enters sleep mode unexpectedly „ Sleep or Hibernation ProblemsScreen is blank „ Computer Screen ProblemsClick the Advanced Settings button Troubleshooting Screen is unreadable or distortedTroubleshooting Incorrect characters appear on the screen Operating time for a fully charged battery is short „ Sound Problems„ Battery Problems „ Other Problems „ a Hard Disk Drive Problem„ a Startup Problem Computer does not start from a device you want Getting Help and Service Getting Help and ServiceGetting Help on the Web Getting Help and ServiceGetting Help and Service Getting Help and Service Getting Help around the World Important Safety Information Safety, Use, and Care Information„ Conditions That Require Immediate Action Safety, Use, and Care Information„ Safety Guidelines „ Service and Upgrades „ Power Cords and Power Adapters Safety, Use, and Care Information „ Plugs and Outlets „ Extension Cords and Related Devices„ Power Supply Statement „ Lithium Coin Cell Battery Notice „ Heat and Product Ventilation Safety, Use, and Care Information „ CD and DVD Drive Safety „ Electrical Current Safety Information Safety, Use, and Care Information „ Laser Compliance Statement Safety, Use, and Care Information „ Liquid Crystal Display LCD Notice Caring Your Computer „ Be Careful about Where and How You WorkSafety, Use, and Care Information Safety, Use, and Care Information „ For outdoor use „ Be Gentle with Your Computer„ Carry Your Computer Properly „ Handle Storage Media and Drives Properly „ Data Safety„ Other Important Tips „ Take Care in Setting Passwords„ Cleaning the Cover of Your Computer „ Cleaning Your Computer Keyboard „ Cleaning Your Computer Display Accessibility and Comfort100 „ Ergonomic Information101 102 Maintenance„ What If You are Traveling? „ Questions about Vision?103 „ General Tips for Maintenance104 105 106 Appendix A. Lenovo Limited Warranty„ What This Warranty Covers 107 „ How to Obtain Warranty Service„ What Your Service Provider Will Do to Correct Problems Appendix A. Lenovo Limited Warranty108 „ Exchange of a Product or Part109 „ Your Additional Responsibilities„ Use of Personal Information 110 „ What This Warranty Does not Cover„ Limitation of Liability 111 112 „ Dispute Resolution„ Other Rights 113 „ European Economic Area EEA114 Warranty Information115 „ Types of Warranty ServiceCustomer Replaceable Unit CRU Service 116 Appendix A. Lenovo Limited Warranty On-site ServiceCourier or Depot Service Customer Carry-In or Mail-In Service117 Warranty Service Telephone Numbers118 119 Appendix B. Customer Replaceable Units CRUs120 Appendix C. SpecificationsSpecifications Environment ƒ TemperaturePack Appendix C. SpecificationsBattery 121122 Appendix D. NoticesAppendix D. Notices 123124 „ Export classification notice„ Television output notice 125 Wireless related information„ Wireless Interoperability 126 „ Usage Environment and Your Health127 128 „ Products with television tuner options installed„ Note to Catv system installer TV tuner information129 „ Example of antenna grounding130 131 Electronic Emissions Notices„ Federal Communications Commission FCC Statement 132 „ Industry Canada Class B Emission Compliance Statement„ Avis de conformité à la réglementation d’Industrie Canada 133 „ German Class B Compliance Statement134 135 „ European Union Compliance Statement Class B Compliance136 „ Korea Class B137 Weee and Recycling Statements„ General Recycling Statement 138 EU Weee Statements139 Japan Recycling Statements140 „ Disposing of a Lenovo Computer Components141 142 143 Trademarks144 IndexIndex 145146 Problems147