Lenovo 4376XC5, 59359210, 4376XC3 manual Troubleshooting Bios password problems, Sleep problems

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Chapter 6. Troubleshooting

BIOS password problems

I forgot my password.	• If you forget your user password, you must ask the
	system administrator to reset your user password.
	• If you forget your HDD password, a Lenovo
	authorized servicer cannot reset your password or
	recover data from the hard disk. You must take your
	computer to a Lenovo authorized servicer or a
	marketing representative to have the hard disk drive
	replaced. Proof of purchase is required, and a fee will
	be charged for parts and service.
	• If you forget your administrator password, a Lenovo
	authorized servicer cannot reset your password. You
	must take your computer to a Lenovo authorized
	servicer or a marketing representative to have the
	system board replaced. Proof of purchase is required,
	and a fee will be charged for parts and service.

Sleep problems

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

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

•The battery power is getting low. Connect the AC adapter to the computer.

•Make sure that:

-The battery is charged.

-The operating temperature is within the acceptable range. See “Chapter 2. Use and care Information” of Lenovo Safety and General Information Guide.

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

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Contents Lenovo IdeaPad U310/U410 U310/U410 Touch Regulatory Notice First Edition December Copyright Lenovo Contents Page „ U310/U310 Touch Getting to know your computerTop view „ U410/U410 Touch Touchpad Getting to know your computer IntegratedSpeakers „ U310/U310 Touch „ U410/U410 Touch Left-side viewBuilt-in MicrophoneRight-side view Built-in microphone Combo audio jackGetting to know your computer Hdmi port U310/U310 Touch U410/U410 Touch Front viewBottom view Louvers Learning the basics „ Conncting to the powerConnecting the computer to an electrical outlet „ Reading the manuals„ Battery Protection „ Checking battery status„ Charging the battery Learning the basicsUsing the touchpad Touchpad Left-click area Right-click area„ Function key combinations Using the keyboardFn + End „ Hotkeys Using hotkeys Setting hotkey mode Inserting a memory card „ Using memory cards not suppliedConnecting external devices Removing a memory card„ Connecting USB devices „ Connecting Bluetooth enabled device on select models Enabling Bluetooth communications on your computer„ Novo button a Special keys and buttonsSystem status indicators Power status indicator Battery status indicatorLearning the basics Symbol Indicator Meaning Status „ Using passwords Securing your computerStarting to use Windows Configuring the operating system for the first timeStart screen Desktop Starting to use Windows Search charmCharms Start charm Settings charmShare charm Devices charm„ Putting your computer to sleep „ Shutting down the computer Touch screen operation „ Multi-touch gesturesPinch Swipe Help and support Wired connection Connecting to the Internet„ Hardware connection „ Software configuration Connecting to the InternetWireless connection Wi-Fi WiMAXEnabling wireless connection „ Connecting to wireless LANConnecting to a wireless network „ Backing up the system partition Lenovo OneKey Recovery system„ Restoring „ Drivers and preinstalled software Troubleshooting„ Finding information „ Bios setup utility „ Lenovo OneKey Recovery system Troubleshooting When do I need to change the boot mode? „ Getting helpTroubleshooting Display problemsTroubleshooting Bios password problems Sleep problemsDisplay panel problems WorkBattery problems Troubleshooting Sound problemsHard disk drive problem Other problems Trademarks Page V1.0en-US