Lenovo B580, B480 manual Sound problem, Other problems, Your computer does not respond

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A sound problem

Print these instructions now and keep it with your computer for reference later.

No sound can be heard from the speaker even when the volume is turned up.

Make sure that:

•The mute function is off.

•The headphone jack is not used.

•Speakers are selected as the playback device.

Other problems

Print these instructions now and keep it with your computer for reference later.

Your computer does not respond.

Do either of the following:

•To turn off your computer, press and hold the power button for 4 seconds or more. If the computer still does not respond, remove the ac power adapter and the battery.

•Your computer might lock when it enters sleep mode during a communication operation. Disable the sleep timer when you are working on the network.

The computer does not start from a device you want.

Do the following:

1.Check the settings under Boot menu of BIOS. Make sure that the Boot Priority Order option starts from the device you want.

2.Also make sure that the device from which the computer starts is enabled. Under the Boot menu, make sure that the device is included in the Boot Priority Order list.

3.Press F12 when the Lenovo logo appears on the screen while the computer is starting up to select the device you want the computer starts from.

The connected external device does not work.

Make sure that:

•Do not connect or disconnect any external device cables other than USB cables while the computer is turned on; otherwise, you might damage your computer.

•When using a high power consumption external devices such as an external USB optical drive, use external device power adapter. Otherwise, the device may not be recognized, or the system might be turned off.

For more technical support, go to http://www.lenovo.com/support.

Chapter 9. Troubleshooting computer problems 55

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Contents Lenovo B480 and B580 User GuideSafety, Warranty, and Setup Guide Regulatory Notice Contents Appendix D. Notices Protect yourself from the heat that your computer generates Read this firstPrevent your computer from getting wet Protect the cables from being damagedProtect your computer and data when moving it Important safety informationConditions that require immediate action Handle your computer gentlyService and upgrades Safety guidelinesPower cords and power adapters Extension cords and related devicesPlugs and outlets Power supply statement General battery noticeExternal devices Lithium 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 Xii User Guide Top view Getting to know your computerLeft-side view Right-side view Front view Bottom view Status indicatorsCaps lock indicator Numeric lock indicatorDevice access status indicator Power and battery status indicator FeaturesSpecifications Frequently asked questions Using your computerConnecting to power Tips on using your computerConfiguring the operating system Reading the manualsPutting the computer into sleep mode or shutting it down Using the ac power adapter and the battery packChecking the battery status Charging the battery Using the ac power adapterMaximizing the battery life Connecting the ac power adapterHandling the battery Lenovo B480 and B580 touch pad Using the touch padUsing the recovery button Using the keyboardNumeric keypad Power conservation Fn+F1 Launching the camera and audio settings Fn+EscFunction key combinations For Lenovo B480 modelsAdjusting display brightness level Fn + up/down arrow Switching the display output location Fn+F3Volume keys Fn + left/right arrow Display backlight control Fn+F2Using the media card reader Connecting to external devicesUsing the Nvidia Optimus Graphics feature Inserting a flash media cardWired connection Connecting to the networkHardware connection CableWireless connection Software configurationConnecting to the network User Guide Accessibility and comfort You and your computerErgonomic information What if you are traveling? Using a fingerprint reader Using passwordsSecurity Attaching a mechanical lockUser Guide Solving recovery problems on the Windows 7 operating system Recovery overviewUser Guide Recovery overview User Guide Replacing the battery Replacing devicesStatic electricity prevention Replacing the backup battery Lenovo B480 Lenovo B580 Replacing the hard disk drive Prerequisites for the procedureUser Guide Lenovo B580 Replacing a memory module Replacing devices Lenovo B580 To replace the PCI Express Mini Card, do the following User Guide Lenovo B580 Removing the optical drive Lenovo B580 User Guide General tips for preventing problems Preventing problemsTaking care of your computer Be careful about where and how you workBe gentle with your computer Carry your computer properlyClean the cover of your computer Take care in setting passwordsHandle storage media and drives properly Data protectionCleaning your computer display Cleaning your computer keyboardRegistering your computer Be sure not to modify your computerTroubleshooting Troubleshooting computer problemsBattery and power problems Battery problemsAn ac power adapter problem Computer screen problemsStartup problem Sleep and hibernation problemsHard disk drive problems Problems with drives and other storage devicesOneKey Recovery Pro program problems Password problemOptical drive problems Other problems Sound problemYour computer does not respond Computer does not start from a device you wantUser Guide Wireless related information Wireless interoperabilityAppendix A. Regulatory information Export classification notice Electronic emission noticesUsage environment and your health Industry Canada Class B emission compliance statement User Guide Appendix B. 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 Appendix D. Notices Trademarks Energy Star model informationAppendix D. Notices User Guide Index User Guide Page Part Number 1P P/N

B580, B480 specifications

The Lenovo B480 and B580 are part of Lenovo's Essential series, designed for home and business users seeking reliable performance combined with an affordable price point. These laptops offer a range of features and technologies that cater to everyday computing needs while ensuring efficiency and productivity.

The B480 and B580 are equipped with Intel’s third-generation Core processors, enabling smooth multitasking and enhanced performance for various applications. Users can opt for configurations ranging from the Intel Core i3 to the more powerful Core i5 processors, allowing for flexibility based on individual requirements.

One of the main features of the Lenovo B480 and B580 is their 14-inch and 15.6-inch displays, respectively. The displays provide vibrant visuals with a resolution of 1366 x 768, making them suitable for watching movies, browsing the web, and completing work tasks. The B580's larger screen size is particularly appealing for those who prefer a more spacious viewing experience.

Both laptops come with ample storage options, featuring traditional hard disk drives (HDD) with capacities of up to 1TB. This allows users to store a significant amount of data, including documents, multimedia files, and software applications. Furthermore, the inclusion of a DVD drive in both models enhances their versatility, allowing users to play and burn CDs and DVDs.

In terms of memory, the B480 and B580 typically support up to 8GB of DDR3 RAM, ensuring smooth performance when running multiple applications simultaneously. The systems also include integrated Intel HD Graphics, which provide adequate graphics performance for standard tasks, casual gaming, and media playback.

Connectivity options are generous with several USB ports, HDMI output, and Ethernet ports available on both models. The inclusion of Wi-Fi and Bluetooth allows for easy wireless connections to networks and peripherals, enhancing the overall user experience.

Additionally, Lenovo's proprietary software tools contribute to the functionality of the B480 and B580. Lenovo Solution Center and OneKey Recovery simplify system management and provide users with an easy way to back up their data.

In conclusion, the Lenovo B480 and B580 are reliable laptops equipped with essential features and technologies suitable for a wide range of users. With their balance of performance, storage options, and connectivity, these models offer great value for anyone looking for a dependable and affordable laptop.
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