Lenovo B470E manual Sleep or hibernation problems, Computer screen problems, Sound problems

Page 39

Sleep or hibernation problems

Problem

Solution

 

 

The critical low-battery error message appears, and the

The battery power is getting low. Connect the ac power

computer immediately turns off.

adapter to the computer, or replace the battery with a

 

fully charged one.

 

 

The computer enters sleep mode immediately after

Make sure that:

Power-on self-test (POST).

• The battery is charged.

 

 

• The operating temperature is within the acceptable

 

range. See “Use and care information” in the Safety

 

and Warranty Guide that comes with your computer.

 

 

Computer screen problems

Problem

Solution

 

 

The screen is blank.

• Do the following:

 

– If you are using the ac power adapter, or using the

 

battery, and the battery status indicator is on, press

 

Fn+up arrow to make the screen brighter.

 

– If the power indicator is in blinking, press the power

 

button to resume from the sleep mode.

 

– If the problem persist, follow the solution in the

 

following problem “The screen is unreadable or

 

distorted.”

 

– Press Fn+F2 to confirm whether the LCD screen has

 

been turned off.

 

 

The screen is unreadable or distorted.

Make sure that:

 

• The display device driver is installed correctly.

 

• The screen resolution and color quality are correctly

 

set.

 

• The monitor type is correct.

 

 

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.

 

 

Sound problems

Problem

Solution

 

 

No sound can be heard from the speaker even when the

Make sure that:

volume is turned up.

• The mute function is off.

 

 

• The headphone jack is not used.

 

• Speakers are selected as the playback device.

 

 

Chapter 5. Troubleshooting 25

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Contents Lenovo B470e and B570e User GuideThird Edition June Copyright Lenovo 2011 Contents Ii User Guide Protect the cables from being damaged Read this firstProtect yourself from the heat that your computer generates Prevent your computer from getting wetHandle your computer gently Important safety informationProtect your computer and data when moving it Conditions that require immediate actionService and upgrades Safety guidelinesPower cords and power adapters Extension cords and related devicesPlugs and outlets Vii Power supply statementGeneral battery notice External devicesLithium coin cell battery notice Rechargeable battery noticeHeat and product ventilation Laser compliance statement Electrical current safety informationUsing headphones or earphones Additional safety informationLiquid crystal display LCD notice Do not connect phone line while using tablet mode Top view Getting to know your computerLeft-side view Front view Right-side viewSpecifications Specifications for Lenovo B470eBottom view Specifications for Lenovo B570e User Guide Learning the basics Putting your computer into sleep state or shutting it down Using ac power adapter and batteryChecking battery status Charging the batteryHandling the battery Removing the battery packFor Lenovo B470e Using the touchpadUsing the keyboard Numeric keypadFunction key combinations For Lenovo B570eKey combination Description Removing a flash media card Connecting external devicesUsing a flash media card not supplied Connecting a universal serial bus USB deviceSpecial keys and buttons Connecting a Bluetooth device on some modelsSystem status indicators Enabling Bluetooth communications on your computerAttaching a security lock not supplied Securing your computerUsing passwords Using the Nvidia Optimus Graphics featureSwitching the Graphics Processing Unit User Guide Hardware connection Connecting to the InternetWired connection Wireless network technology connect without wiringEnabling wireless connection Software configurationWireless connection Using Wi-Fi/WiMAX on some modelsSoftware configuration User Guide Lenovo OneKey Rescue system Using Lenovo OneKey Recovery in Windows 7 operating systemUser Guide Frequently asked questions TroubleshootingProblem Solution TroubleshootingDisplay problems Password problemSleep or hibernation problems Computer screen problemsSound problems OneKey Rescue system problems Battery problemsHard disk drive problem Startup problemPriority Order list User Guide Appendix A. CRU instructions Replacing the batteryHandling a hard disk drive Replacing the hard disk driveAppendix A. CRU instructions Replacing a memory module Removing the optical drive on some models User Guide Usage environment and your health Wireless related informationWireless interoperability Appendix B. Regulatory informationSafety information related to Mobile Broadband Export classification noticeElectronic emissions notices Industry Canada Class B emission compliance statement Federal Communications Commission FCC StatementUser Guide Appendix C. Weee and recycling statements China Weee statement Important Weee informationJapan recycling statements Disposing of Lenovo computer components Recycling information for BrazilBattery recycling information for the European Union User Guide Ukraine RoHS China RoHS Turkish RoHSIndia RoHS

B470E specifications

The Lenovo B470E is a budget-friendly laptop that caters to both personal and professional users seeking a reliable computing solution. With its sleek design and functional features, it stands out as a practical choice for anyone needing a dependable device for everyday tasks.

At the heart of the Lenovo B470E lies a robust Intel processor, typically ranging from Core i3 to i5, which delivers impressive performance for a wide array of applications. The laptop is well-suited for multitasking, allowing users to run multiple programs simultaneously without significant slowdowns. Its efficient processing capabilities ensure smooth operation whether you’re browsing the internet, streaming videos, or working on documents.

One of the notable features of the B470E is its 14-inch display, which provides ample screen space while maintaining portability. The display typically comes with a resolution of 1366 x 768, offering decent clarity for most tasks. Additionally, it features anti-glare technology, reducing reflections and providing a comfortable viewing experience in various lighting conditions.

The keyboard of the B470E is designed for comfortable typing, featuring a full-sized layout with a numeric keypad. The keys are well spaced and provide a satisfactory tactile response, making it an excellent choice for users who spend long hours on their laptops. Furthermore, the laptop incorporates a multi-touch trackpad, enabling intuitive navigation and gesture controls.

Storage options for the Lenovo B470E often include a traditional hard disk drive (HDD), typically starting from 500GB. This ample storage capacity accommodates a large volume of files, documents, and media. In some models, users can opt for a solid-state drive (SSD), providing faster data access and improving overall system responsiveness.

Connectivity is another strong point for the B470E, as it features various ports, including USB 2.0, USB 3.0, HDMI, and VGA outputs. This versatility allows users to connect external devices such as printers, projectors, and additional storage solutions without hassle.

Additionally, the Lenovo B470E offers essential wireless connectivity options, including Wi-Fi and Bluetooth, enabling seamless connection to networks and peripherals.

In terms of battery life, the B470E is designed to last through a full workday under normal usage conditions, making it a reliable companion for users on the go.

Overall, the Lenovo B470E presents a balanced combination of performance, portability, and value, making it an ideal choice for students, professionals, and casual users alike. Its blend of essential features and user-friendly design ensures that it meets the demands of everyday computing tasks efficiently.
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