Beep errors, Memory problems, Modem and networking

–If you have used the partition software, examine the partition on the hard disk drive or solid state drive by using the software, and recover the partition if required.

–Use either the Rescue and Recovery workspace or the recovery discs to restore the system to the factory state. For details about restoring the system to the factory state, see “Creating and using recovery media” on page 107.

If the problem persists, have the computer serviced.

•Problem: My screen goes blank while the computer is on.

Solution: Your screen saver or power management may be enabled. Do either of the following:

–Touch the TrackPoint or the touch pad, or press a key to exit the screen saver.

–Press the power switch to resume from sleep (standby) or hibernation.

Beep errors

Table 9. Beep errors

Problem	Solution

One short beep, pause, three short beeps, pause, three	Make sure that memory modules are installed correctly. If
more short beeps, and one short beep	they are, and you still hear the beeps, have the computer
	serviced.

One long and two short beeps	The video function has a problem. Have the computer
	serviced.

Four cycles of four short beeps	The Security Chip has a problem. Have the computer
	serviced.

Five beeps	The system board has a problem. Have the computer
	serviced.

Memory problems

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

If your memory is not operating properly, check the following items:

1.Verify that the memory is installed and seated correctly in your computer.

It may be necessary to remove all added memories to test the computer with only the factory-installed memories, and then reinstall the memory one at a time to ensure a proper connection. For the procedures to remove and reinstall a memory, refer to “Replacing memory” on page 143.

2.Check for error messages during startup.

Follow the appropriate corrective actions for Power-on self-test (POST) “Error messages” on page 209.

3.Verify that the latest system BIOS (UEFI BIOS) for your model has been installed.

4.Verify the proper memory configuration and compatibility including the maximum memory size and the memory speed.

For details, refer to the instructions in “Replacing memory” on page 143.

5.Run “Lenovo ThinkVantage Toolbox” on page 207.

Modem and networking

The following are the most common modem and networking problems:

Ethernet problems

• Problem: Your computer cannot connect to the network.

212User Guide

4291BR6PC10B616, 42875TU, 428742U, 4294CTO, X220-4287 specifications

Lenovo's X220i, X220i Tablet, and their respective models such as 42872W5, 42912XU, and 429133U are part of the ThinkPad series, renowned for their reliability, performance, and innovative features tailored for both business and personal use. The X220i and X220i Tablet stand out in the ultrabook category, offering a perfect balance between portability and functionality, making them ideal for professionals on the go.

The X220i features a 12.5-inch display, which delivers vibrant visuals and clear text, ensuring users can work efficiently in various lighting conditions. The display options may include HD resolutions with anti-glare technology, minimizing reflections and enhancing visibility. The X220i Tablet takes portability a step further by incorporating touchscreen capabilities, allowing for a more interactive experience, which is particularly useful for presentations and drawing applications.

Under the hood, both models are powered by Intel Core processors, providing solid performance for multitasking and demanding applications. The X220i comes with options for up to 8GB of RAM, ensuring smooth operation even when handling multiple applications simultaneously. Storage options typically include fast SSDs, which not only enhance boot times but also improve file access speeds, contributing to overall responsiveness.

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Connectivity options are extensive, featuring USB 3.0 ports, a VGA port, and HDMI, allowing users to connect to various peripherals and external displays. Advanced wireless connectivity options such as Wi-Fi and Bluetooth enable seamless communication and file sharing.

Battery life is another area where the X220i series excels. The laptops are designed to last an extended period on a single charge, often exceeding 8 hours, making them suitable for long workdays without the need for a power outlet.

In conclusion, the Lenovo X220i, X220i Tablet, and their variants like 42872W5, 42912XU, and 429133U are exemplary devices that blend portability, performance, and durability. Ideal for professionals and students alike, these devices cater to a range of computing needs while maintaining a compact and lightweight profile.

Lenovo 429133U, X220I manual Beep errors, Memory problems, Modem and networking, Ethernet problems

Models: 4291BR6PC10B616 42875TU 428742U 4294CTO X220-4287 X220 TABLET 4290WFZPC10D518 X220 429133U 42912XU 42872W5 X220I TABLET X220I