The battery pack cannot be charged.

You cannot charge the battery when it is too hot. If the battery feels hot, remove it from the computer and allow it to cool to room temperature. After it cools, reinstall it and recharge the battery. If it still cannot be charged, have it serviced.

An ac power adapter problem

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

The ac power adapter is connected to the computer and the working electrical outlet, but the power adapter (power plug) icon is not displayed on the taskbar. Also the ac power indicator does not light up.

Do the following:

1.Make sure that the connection of the ac power adapter is correct. For instructions on connecting the ac power adapter, see Safety, Warranty, and Setup Guide that comes with your computer.

2.If the connection of the ac power adapter is correct, turn off the computer, then disconnect the ac power adapter and remove the main battery.

3.Reinstall the battery and reconnect the ac power adapter, then turn on the computer.

4.If the power adapter icon still is not displayed on the taskbar and the ac power indicator does not light up, have the ac power adapter and your computer serviced.

A startup problem

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

The Microsoft Windows operating system does not start.

On the Windows operating system, use the recovery program preinstalled on your computer to help solve or identify your problem. For details, refer to the instructions in Chapter 6 “Recovery overview” on page 27

Sleep and hibernation problems

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

A critical low-battery error occurs, and the computer immediately turns off.

The battery power is getting low. Connect the ac power adapter to the computer and plug it into an electrical outlet, or replace the battery with a charged one.

The computer enters sleep mode immediately after the power-on self-test.

Make sure that:

•The battery is charged.

•The operating temperature is within the acceptable range. refer to Chapter 8 “Preventing problems” on page 47.

Computer screen problems

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

The screen is blank.

Do any of 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 increase the screen brightness.

•If the power indicator is in blinking, press the power button to resume from the sleep mode.

52User Guide

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Lenovo B480, B580 Computer screen problems, An ac power adapter problem, Startup problem, Sleep and hibernation problems
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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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