6.Make sure that the correct device driver name is shown in the adapter information window.

Note: The device driver name depends on the video chip that has been installed on your computer.

7.Click the Properties button. Check the “Device status” box and make sure the device is working properly. If not, click the Troubleshoot button.

8.Click the Monitor tab.

9.Make sure the information is correct.

10.Click the Properties button. Check the “Device status” box and make sure the device is working properly. If not, click the Troubleshoot button.

•Problem: Incorrect characters appear on the screen.

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

•Problem: The screen stays on even after you turn off your computer.

Solution: Press and hold the power switch for 4 seconds or over to turn off your computer; then turn it on again.

•Problem: Missing, discolored, or bright dots appear on the screen every time you turn on your computer.

Solution: This is an intrinsic characteristic of the TFT technology. Your computer's display contains multiple thin-film transistors (TFTs). A small number of missing, discolored, or bright dots on the screen might exist all the time.

External monitor problems

•Problem: The external monitor is blank.

Solution: To bring up the image, press Fn+F7 and select the desired monitor. If the problem persists, do the following:

1.Connect the external monitor to another computer to make sure it works.

2.Reconnect the external monitor to your computer.

3.Refer to the manual shipped with the external monitor to check the resolutions and refresh rates that are supported.

–If the external monitor supports the same resolution as the computer display or a higher resolution, view output on the external monitor or on both the external monitor and the computer display.

–If the external monitor supports a lower resolution than the computer display, view output on the external monitor only. (If you view output on the both the computer display and the external monitor, the external monitor screen will be blank or distorted.)

•Problem: You cannot set a higher resolution than the present one on your external monitor. Solution:

–Make sure that monitor information is correct. Do the following: For Windows 7:

1. Right-click on the desktop, and click Screen resolution.

Note: If your computer cannot detect the external monitor, click the Detect button.

2.Click the icon for the desired monitor (the Monitor-2icon is for the external monitor).

3.Click Advanced Settings.

4.Click the Adapter tab.

220User Guide

Page 237 Page 239
Page 238
Image 238
Lenovo X220-4287, X220I TABLET, X220 TABLET, 42872W5, 42875TU, 4290WFZPC10D518, 42912XU, 429133U External monitor problems
Page 237 Page 239

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.

A key feature of the ThinkPad series is its exceptional build quality. The X220i and X220i Tablet are constructed with durable materials, including magnesium alloy and reinforced hinges, designed to withstand the rigors of daily use. Additionally, they are tested against military specifications, ensuring reliability in challenging conditions.

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.
Top Page Image Contents