Solution: Discharge and recharge the built-in battery.

•Problem: The operating time for a fully charged built-in battery is short.

Solution: Discharge and recharge the built-in battery. If your battery operating time is still short, call Lenovo Customer Service Center to have it serviced.

•Problem: The computer does not operate with a fully charged built-in battery.

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

•Problem: The built-in battery cannot be charged.

Solution: You cannot charge the battery when it is too hot. Turn off the computer and allow it to cool to room temperature. After it cools, recharge the battery. If it still cannot be charged, call Lenovo Customer Service to have it serviced.

An ac power adapter problem

Problem: 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 system-status indicator does not blink.

Solution: Do the following:

1.Ensure 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.

3.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 system-status indicator does not blink, have the ac power adapter and your computer serviced.

Note: To display the power adapter (power plug) icon, click Show hidden icons on the taskbar.

Power problems

Print these instructions now and keep the instructions with your computer for reference later. If your computer is getting no power at all, check the following items:

1.Verify the power button. Refer to “Status indicators” on page 7. The power button is lit whenever the computer is on.

2.Check all power connections. Remove any power strips and surge protectors to connect the ac power adapter directly to the ac power outlet.

3.Inspect the ac power adapter. Check for any physical damage, and ensure that the power cable is firmly attached to the adapter brick and the computer.

4.Verify the ac power source is working by attaching another device to the outlet.

5.Remove all devices and then test for system power with minimal devices attached.

a.Disconnect the ac power adapter and all cables from the computer.

b.Close the computer display, and turn the computer over.

c.Remove the memory module. Refer to “Replacing a memory module” on page 74.

d.Remove the wireless LAN card. Refer to “Replacing a wireless LAN card” on page 76.

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Lenovo S540 manual An ac power adapter problem, Power problems
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S540 specifications

The Lenovo S540 is a sophisticated laptop designed for both performance and portability, making it an excellent choice for professionals and students alike. This device showcases a blend of modern aesthetics and powerful functionality, representing a notable entry in Lenovo's versatile lineup.

At the heart of the Lenovo S540 lies an Intel Core processor, available in multiple configurations, enabling users to select the level of performance that best suits their needs. These processors deliver exceptional speed and responsiveness, allowing users to seamlessly handle demanding tasks such as video editing, graphic design, or multitasking across various applications.

One of the standout features of the S540 is its stunning display. The laptop offers a Full HD display with vibrant colors and sharp details, whether you are watching movies, editing photos, or simply browsing the web. The narrow bezels around the screen enhance the viewing experience, making it an immersive option for both work and entertainment.

In terms of design, the Lenovo S540 boasts a sleek and lightweight chassis, making it ideal for on-the-go usage. Weighing in at just over 3.5 pounds, it easily fits into backpacks or briefcases, perfect for commuters or students moving between classes. The premium build quality ensures that it not only looks good but can also withstand daily wear and tear.

Battery life is another highlight, with the S540 offering impressive longevity that can last up to 12 hours on a single charge. This capability is crucial for users who may not have immediate access to a power source while out and about. Furthermore, it features rapid charge technology allowing users to recharge the battery quickly when needed.

Connectivity options on the S540 are generous, including USB-C, USB 3.1, HDMI, and a headphone/microphone combo jack. These ports facilitate easy connection to a variety of devices and peripherals, enhancing the overall usability of the laptop.

The Lenovo S540 also makes considerable use of modern technologies such as Intelligent Cooling, which adjusts performance and efficiency based on usage patterns, and TrueBlock Privacy Shutter, providing users with physical protection for the webcam when not in use.

With its balance of style, performance, and innovative features, the Lenovo S540 stands out as a formidable option in the competitive landscape of ultrabooks, making it a prime choice for anyone in need of a reliable and capable laptop.
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