Lenovo 59RF0035, S400U 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 S300/S400/S400u/S405 Regulatory Notice Second Edition August Copyright Lenovo Contents Page Top view Getting to know your computerTouchpad Getting to know your computer IntegratedHdmi port Left-side viewFan louvers RJ-45 portRight-side view JackUSB 2.0 port Front view Bottom view „ Turning on the computer „ Connecting to the powerLearning the basics „ Reading the manuals„ Checking battery status „ Charging the battery„ Removing the battery pack „ Handling the battery Using the touchpad Left-click areaRight-click area Hotkeys „ Setting hotkey mode Removing a memory card „ Using memory cards not suppliedConnecting external devices Inserting a memory card„ Connecting USB devices Enabling Bluetooth communications on your computer „ Connecting Bluetooth enabled devices on select modelsSpecial keys and buttons „ Novo button aPower status indicator Battery status indicator System status indicatorsLearning the basics Symbol Indicator Meaning Status Securing your computer „ Using VeriFaceConfiguring the operating system for the first time Starting to use WindowsStart screen Desktop Search charm Starting to use WindowsCharms Devices charm Settings charmShare charm Start charm„ Putting your computer to sleep „ Shutting down the computer Help and support Connecting to the Internet Wired connection„ Hardware connection Cable Connecting to the Internet „ Software configurationWi-Fi WiMAX Wireless connection„ Connecting to wireless LAN Enabling wireless connectionConnecting to a wireless network Lenovo OneKey Recovery system „ Backing up the system partition„ Restoring „ Finding information Troubleshooting„ Drivers and preinstalled software Frequently asked questions„ Lenovo OneKey Recovery system „ Bios setup utilityTroubleshooting „ Getting help When do I need to change the boot mode?Display problems TroubleshootingSleep problems Troubleshooting Bios password problemsWork Display panel problemsTroubleshooting Sound problems Battery problemsHard disk drive problem Respond Troubleshooting Other problemsTrademarks Page V2.0en-US