Refer to “Lithium battery notice” on page x for information about replacing and disposing of the battery.

To change the battery:

1.Turn off the computer and disconnect the power cord from the electrical outlet and from the computer.

2.Open the computer cover. See “Opening the cover” on page 10.

3.Access the system board. See “Accessing system board components and drives” on page 12.

4.Locate the battery. See “Identifying parts on the system board” on page 13.

5.Remove the old battery.

6.Install the new battery.

7.Reinstall the PCI riser assembly if removed.

8.Close the computer cover, and connect the cables. See “Closing the cover and connecting the cables” on page 25.

Note: When the computer is turned on for the first time after battery replacement, an error message might be displayed. This is normal after replacing the battery.

9.Turn on the computer and all attached devices.

10.Use the Setup Utility program to set the date and time and any passwords. See Chapter 2, “Using the Setup Utility,” on page 27.

Erasing a lost or forgotten password (clearing CMOS)

This section applies to lost or forgotten passwords. For more information about lost or forgotten passwords, go to the ThinkVantage Productivity Center program.

Note: If you are enrolled in the Hardware Password Reset program, refer to “Resetting the hard disk drive and power-on password” on page 29 to reset your password. If you do clear CMOS or restore Setup Utility defaults, you will have to re-enroll in the Hardware Password Reset program.

To erase a forgotten password:

1.Open the computer cover. See“Opening the cover” on page 10.

2.Access the system board. See “Accessing system board components and drives” on page 12.

3.Locate the Clear CMOS/Recovery jumper on the system board. See “Identifying parts on the system board” on page 13.

24User Guide

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Lenovo 8156, 8215, 8157, 8158, 8159, 9210, 9211, 8116, TC A52-8155 manual Erasing a lost or forgotten password clearing Cmos
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9211, 9210, 8159, 8116, 8158 specifications

Lenovo has been a prominent player in the realm of computing technology, and its range of devices continues to impress with innovative features and robust performance. Among its diverse lineup, the Lenovo 8157, 8156, TC A52-8155, 8215, and 8158 stand out as notable models equipped with advanced technologies and exceptional characteristics.

The Lenovo 8157 is designed for users who seek a powerful computing experience. It typically features high-performance Intel processors that deliver swift multitasking capabilities, alongside ample RAM for seamless operation. The device integrates a vibrant display, ensuring that visuals are sharp and clear, making it ideal for both productivity tasks and entertainment.

Moving to the Lenovo 8156, this model emphasizes a balance between performance and portability. It often includes extensive battery life, allowing users to work on the go without frequent recharges. Enhanced graphics support also characterizes this device, catering to users who enjoy gaming or graphic design applications.

The TC A52-8155 offers a compelling option for businesses and home office setups. It typically includes a spacious hard drive for storage, making it suitable for users who require substantial space for applications and files. Enhanced connectivity features are also a highlight, ensuring that users can easily link their devices to networks and peripherals.

Lenovo’s 8215 model is distinguished by its user-centric design. Its ergonomic build and lightweight structure enhance usability, making it a favorite among professionals who travel frequently. Coupled with Lenovo’s proprietary software solutions, such as security features and recovery options, the 8215 ensures a secure and reliable user experience.

Finally, the Lenovo 8158 is geared towards users looking for versatility and strength. This model often comes with advanced thermal management technology, ensuring the device remains responsive even under heavy workloads. With excellent wireless capabilities and a suite of multimedia features, the 8158 is designed to cater both to work demands and entertainment needs.

In conclusion, the Lenovo 8157, 8156, TC A52-8155, 8215, and 8158 represent a diverse range of devices that cater to different user requirements. With their powerful hardware, innovative designs, and user-friendly features, Lenovo continues to deliver products that combine performance and practicality, making them suitable for a wide array of consumers, from casual users to business professionals.
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