Chapter 5. Troubleshooting

Sleep or hibernation 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, or replace the battery with a fully charged one.

•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.

The computer does not return from sleep mode and the computer does not work.

•If the computer does not return from sleep mode, it may have entered hibernation mode automatically because the battery is depleted. Check the power indicator.

•If your computer is in sleep mode, connect the AC adapter to the computer, then press any key or the power button.

•If your computer is in hibernation mode or power-off state, connect the AC adapter to the computer, then press the power button to resume operation.

Note: If the system still does not return from sleep mode, your system has stopped responding, and you cannot turn off the computer; reset the computer. Unsaved data may be lost. To reset the computer, press and hold the power button for 4 seconds or more. If the computer is still not reset, remove the AC adapter and the battery.

Computer screen problems

The screen is blank.

The screen is unreadable or distorted.

Incorrect characters appear on the screen.

•Do the following:

-If you are using the AC adapter, or using the battery, and the battery status indicator is on, press Fn + ↑ 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.

•Make sure that:

-The display device driver is installed correctly.

-The screen resolution and color quality are correctly set.

-The monitor type is correct.

•Did you install the operating system or application program correctly? If they are installed and configured correctly, have the computer serviced.

Sound problems

No sound can be heard from the

• Make sure that:

speaker even when the volume is

- The Mute function is off.

turned up.

- The headphone jack is not used.

 

- Speakers are selected as the playback device.

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Lenovo V470, B470 manual Troubleshooting Sleep or hibernation problems, Computer screen problems, Sound problems
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B470, V470 specifications

The Lenovo V470 and B470 laptops are part of Lenovo's series targeted at small and medium-sized businesses, offering a blend of performance, reliability, and essential features for everyday computing tasks. These laptops are particularly known for their balance of power and portability, making them suitable for professionals and students alike.

The Lenovo V470 features a sleek design with a durable finish, combining aesthetics with functionality. It is equipped with Intel's Core i-series processors, providing robust performance for multitasking and running demanding applications. The laptop comes with various memory options, typically ranging from 4GB to 8GB of DDR3 RAM, which can be further upgraded for those who need enhanced performance.

One standout feature of the V470 is its 14-inch display, available in both HD (1366x768) and HD+ (1600x900) resolutions. This means users will enjoy vibrant visuals and clear text, making it ideal for watching videos, reading documents, and browsing the web. Moreover, the anti-glare coating ensures that users can work comfortably in different lighting conditions without straining their eyes.

On the other hand, the Lenovo B470 offers similar features but targets a slightly different user base. It emphasizes affordability while not compromising too much on performance. The B470 also features Intel's processors, along with customizable options for RAM and storage, allowing users to configure the laptop according to their specific needs.

Both models come with essential connectivity options, including USB 3.0 ports, HDMI, and VGA outputs, which facilitate easy connections to peripherals and external displays. Bluetooth and Wi-Fi support ensures that users can easily connect to networks and other devices wirelessly.

Security is also a crucial aspect for both laptops, as they often include features like a fingerprint reader and Lenovo's password manager, which help protect sensitive information. Additionally, Lenovo’s OneKey Rescue System allows for easy system recovery in case of any software issues.

Both the V470 and B470 are designed to provide a reliable computing experience, making them excellent choices for users looking for dependable performance without breaking the bank. With their balance of performance, portability, and security features, these laptops cater to a multitude of professional and academic needs in today's fast-paced environment.
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