Introduction

This User Guide contains the following information:

vChapter 1, “Arranging your workspace,” on page 1 provides information about setting up your computer for comfort and the impact of light sources, air circulation, and electrical outlets.

vChapter 2, “Setting up your computer,” on page 3 provides information about setting up your computer and software and operating system installation.

vChapter 3, “Installing options,” on page 11 provides information on the features and options that are available for your computer.

vChapter 4, “Recovering software,” on page 37 provides instructions on how to use the ThinkVantage® Rescue and Recoveryprogram to create product recovery disks, back up data, recover software, and restore the entire contents of your hard disk to a previously saved state.

vChapter 5, “Using the Setup Utility,” on page 45 provides instructions on how to view and change the configuration settings of your computer.

vChapter 6, “Updating system programs,” on page 49 provides information about updating POST/BIOS and how to recover from a POST/BIOS update failure.

vChapter 7, “Troubleshooting and diagnostics,” on page 53 provides information about basic troubleshooting and diagnostic tools for your computer.

vChapter 8, “Getting information, help, and service,” on page 61 provides information about the wide variety of helpful resources available from Lenovo.

vAppendix A, “Manual modem commands,” on page 65 provides commands for manually programming your modem.

vAppendix B, “Notices,” on page 73 provides notices and trademark information.

© Lenovo 2005, 2007. Portions © IBM Corp. 2005.

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Lenovo TC A55-9636, 9638, 9643, 9644, 9645, 9640 manual Introduction

TC A55-9636, 9640, 9645, 9644, 9643 specifications

Lenovo has consistently been at the forefront of innovation in the computing world, with a range of laptops and desktops that cater to a variety of needs and preferences. Among their popular offerings are the Lenovo 9640, 9643, TC A55-9636, 9644, and 9645. Each of these models is designed to provide exceptional performance, reliability, and user-friendly experience, making them appealing choices for both personal and business use.

The Lenovo 9640 is renowned for its sleek design and powerful performance. This model is equipped with the latest Intel processors, ensuring smooth multitasking and efficient power consumption. It features a vibrant display that provides excellent color accuracy and vivid visuals, making it ideal for content creators and casual users alike. With ample storage options and high-speed SSD configurations, users can expect fast boot times and quick file access.

Similarly, the Lenovo 9643 builds on this legacy, offering enhanced graphics capabilities with dedicated GPU options. This feature is particularly beneficial for gamers and professionals who rely on graphical performance for tasks such as video editing or 3D modeling. The 9643 also emphasizes connectivity, providing a range of ports, including USB-C, HDMI, and Ethernet, ensuring users can easily connect to peripherals and networks.

The TC A55-9636 is Lenovo's entry into the compact desktop market, designed for users seeking a powerful, space-saving solution. With its robust performance metrics and energy-efficient components, the A55-9636 is perfect for both home and office environments. It supports a variety of multitasking scenarios, making it suitable for productivity-driven tasks, while its expandable architecture means users can upgrade components as their needs evolve.

The Lenovo 9644 and 9645 round out this impressive lineup with their focus on business-centric features. These models provide enhanced security options, including fingerprint readers and TPM chips, catering to enterprises that prioritize data protection. With long battery life and solid build quality, both models promise durability and reliability, critical for professionals who are always on the go.

All models in this series showcase Lenovo's commitment to sustainability, incorporating eco-friendly materials and energy-efficient technologies. The user-friendly interfaces across the devices ensure a seamless experience, meeting the demands of a broad user base from students to business executives. In summary, the Lenovo 9640, 9643, TC A55-9636, 9644, and 9645 represent a versatile range of computing solutions that combine cutting-edge technology with efficiency, ensuring users can achieve their goals effectively and stylishly.