Lenovo U410, U310 Troubleshooting Sound problems, Battery problems, A hard disk drive problem

Page 45

Chapter 6. Troubleshooting

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 combo audio jack is not used.

-The speaker is selected as the playback device.

Battery problems

Your computer shuts down before the battery status indicator shows empty. -or-

Your computer operates after the battery status indi- cator shows empty.

The computer does not operate with a fully charged battery.

•Discharge and recharge the battery.

•The surge protector in the battery might be active. Turn off the computer for one minute to reset the protector; then turn on the computer again.

A hard disk drive problem

The hard disk drive does	• In the Boot menu in BIOS setup utility, make sure
not work.	that the hard disk drive is included in the UEFI
	correctly.

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Contents User Guide Lenovo IdeaPad U310/U410Third Edition August Copyright Lenovo Regulatory NoticeChapter 5. Lenovo OneKey Recovery system ContentsChapter 1. Getting to know your computer Chapter 4. Connecting to the InternetPage „ U310 Chapter 1. Getting to know your computerTop view a b c d g e fa b c dg e f „ U410e System status indicators b Computer display c Wireless module antennas d Power buttona Integrated camerac d e Left-side viewb Fan louvers c RJ-45 portg Built-in microphonef Combo audio Connects to headphones or headsets. The combo audio a Built-in microphone b Combo audio jack Right-side viewe c f g d c USB portf HDMI port g RJ-45 portThis port connects the computer to an Ethernet network U310 U410Front view Bottom view Allow air to enter the computer for cooling a LouversConnecting the computer to an electrical outlet „ Conncting to the powerChapter 2. Learning the basics „ Reading the manuals„ Charging the battery „ Checking battery status„ Battery Protection Chapter 2. Learning the basicsUsing the touchpad a Touchpad b Left-click area c Right-click areaNote You can enable/disable the touchpad by pressing d Using the keyboard „ Function key combinationsFn + End „ Hotkeys Using hotkeys Setting hotkey mode Connecting external devices „ Using memory cards not suppliedInserting a memory card Removing a memory card„ Connecting USB devices Enabling Bluetooth communications on your computer „ Connecting Bluetooth enabled device on select modelsSpecial keys and buttons „ Novo button aSystem status indicators a Power status indicator b Battery status indicatorThese indicators inform you of the computer status Indicator SymbolMeaning statusSecuring your computer „ Using passwordsChapter 3. Starting to use Windows Configuring the operating system for the first timeStart screen DesktopSearch charm Chapter 3. Starting to use WindowsThe charms Share charm Settings charmStart charm Devices charmPutting the computer to sleep or shutting it down „ Putting your computer to sleep„ Shutting down the computer 2 Select Power → Shut downHelp and support Wireless network technology connect without wiring Chapter 4. Connecting to the Internet„ Hardware connection Wired connectionChapter 4. Connecting to the Internet „ Software configurationWi-Fi WiMAX Wireless connectionEnabling wireless connection Connecting to a wireless network„ Connecting to wireless LAN 2 Click System Backup Chapter 5. Lenovo OneKey Recovery system„ Backing up the system partition „ Restoring„ Drivers and preinstalled software Chapter 6. TroubleshootingFrequently asked questions What safety precautions should I follow when using my computer?„ BIOS setup utility „ Lenovo OneKey Recovery systemChapter 6. Troubleshooting Where are the recovery discs?When do I need to change the boot mode? „ Getting helpHow can I contact the customer support center? Display problems TroubleshootingSleep problems Chapter 6. Troubleshooting BIOS password problemsDisplay panel problems Chapter 6. Troubleshooting Sound problems Battery problemsA hard disk drive problem Chapter 6. Troubleshooting Other problems Trademarks Page Lenovo China V3.0en-US

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