Solution: A power-on password or a supervisor password is set. Type the password and press Enter to use the computer (refer to “Using passwords” on page 89). If the power-on password is not accepted, a supervisor password might have been set. Type the supervisor password and press Enter. If you still see the same error message, have the computer serviced.

•Message: The hard disk password prompt

Solution: A hard disk password is set. Type the password and press Enter to use the computer (refer to “Hard disk passwords” on page 91).

•Message: Hibernation error

Solution: The system configuration changed between the time your computer entered hibernation mode and the time it left this mode, and your computer cannot resume normal operation.

–Restore the system configuration to what it was before your computer entered hibernation mode.

–If the memory size has been changed, re-create the hibernation file.

•Message: Fan error

Solution: Cooling fan has failed. Have the computer serviced.

Errors without messages

•Problem: My screen keeps blanking when I do not want it to.

Solution: You can disable any system timers, such as the LCD turn-off timer or the blank timer

1.Start Power Manager.

2.Click the Power plan tab (in Windows XP, Power scheme), and then select Maximum Performance from the predefined power plans (in Windows XP, Power scheme).

•Problem: When I turn on the machine, nothing appears on the screen and the machine does not beep while starting up.

Note: If you are not sure whether you heard any beeps, turn off the computer by pressing and holding the power switch for 4 seconds or more. Turn it on and listen again.

Solution: Make sure that:

–The battery is installed correctly.

–The ac power adapter is connected to the computer and the power cord is plugged into a working electrical outlet.

–The computer is turned on. (Turn the power switch on again for confirmation.)

If a power-on password is set:

–Press any key to display the prompt for the power-on password. If the brightness level of the screen is low, increase it by pressing the Fn+Home.

–Type the correct password and press Enter (refer to Power-on password).

If these items are properly set, and the screen remains blank, have the computer serviced.

•Problem: When I turn on the machine, only a white cursor appears on a blank screen.

Solution: If you have modified a partition on your hard disk drive or solid state drive by using a partition software, information about that partition, or the master boot record may have been destroyed.

1.Turn off the computer, and then turn it on again.

2.If you still see only the cursor on the screen, do the following:

Chapter 10. Troubleshooting computer problems 211

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Lenovo 42912XU, X220I TABLET, X220 TABLET, X220-4287, 42872W5, 42875TU, 4290WFZPC10D518, 429133U manual Errors without messages
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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.
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