On computers that have a CD-ROM or CD-RW drive in addition to a DVD-ROM drive, make sure that the DVD disc is in the drive labeled “DVD”.

If these actions do not correct the problem, run the diagnostic programs (see “Diagnostic programs” on page 101 for instructions). If you need technical assistance, see Chapter 11 “Getting information, help, and service” on page 105.

Intermittent problems

Symptom: A problem occurs only occasionally and is difficult to repeat.

Actions:

Verify that all cables and cords are securely connected to the computer and attached devices.

Verify that when the computer is on, the fan grill is not blocked (there is air flow around the grill), and the fans are working. If airflow is blocked or the fans are not working, the computer might overheat.

If SCSI devices are installed, verify that the last external device in each SCSI chain is terminated correctly. (See your SCSI documentation.)

If these actions do not correct the problem, run the diagnostic programs (see “Diagnostic programs” on page 101 for instructions). If you need technical assistance, see Chapter 11 “Getting information, help, and service” on page 105.

Keyboard, mouse, or pointing device problems

Select your symptom from the following list:

“All or some keys on the keyboard do not work” on page 91

“The mouse or pointing device does not work” on page 92

“The pointer on the screen does not move smoothly with the mouse” on page 92

“The fingerprint reader does not work” on page 92

“The wireless keyboard does not work” on page 92

All or some keys on the keyboard do not work

Symptom: All or some keys on the keyboard do not work.

Actions:

Verify that the keyboard cable is securely connected to the correct connector on the computer.

If you are using an Enhanced Performance USB keyboard and one or more of the Rapid Access buttons are the only keys that are not working, these buttons might have been disabled or have not been assigned to a function. Use the help system in the Enhanced Performance Customization Keyboard program to help diagnose problems with the Rapid Access buttons.

On the Windows 7 operating system, do the following:

1.Click Start Control Panel.

2.Click Hardware and Sound.

3.Click Devices and Printers.

4.Double-click USB Enhanced Performance Keyboard. The USB Enhanced Performance Keyboard Customization program starts.

If these actions do not correct the problem, have the computer and keyboard serviced. See Chapter 11 “Getting information, help, and service” on page 105 for details.

Chapter 10. Troubleshooting and diagnostics 91

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Lenovo 2221, 2224, 2226, 2208, 2209, 2227, 2010, 1996, 2002 Intermittent problems, Keyboard, mouse, or pointing device problems

2002, 2208, 2010, 2209, 2221 specifications

The Lenovo 2226, 1996, 2224, 1997, and 2227 models represent a significant evolution in Lenovo's lineup of personal computers and laptops, primarily during the late 1990s and early 2000s. Each model brought unique features and technological advancements, catering to different segments of the consumer and business markets.

The Lenovo 2226, for instance, was designed with a focus on performance and versatility. It was equipped with Intel Pentium processors, offering users the necessary power for both productivity tasks and multimedia applications. The machine supported additional RAM expansion, enhancing its multitasking capabilities. The inclusion of a high-resolution display made it attractive for users who engaged in graphic design or video editing.

Moving on to the Lenovo 1996, this model was particularly geared towards small businesses and educational institutions. It came with a more affordable price point without compromising essential features. The device included a robust suite of software for productivity and education, along with enhanced security features to protect sensitive information. It also offered a range of connectivity options including Ethernet and serial ports, facilitating seamless integration within existing network infrastructures.

The Lenovo 2224, known for its ergonomic design, placed a strong emphasis on user comfort. This model featured an adjustable keyboard height and a lightweight frame, making it ideal for long hours of use. It also boasted an extended battery life, making it suitable for professionals who were always on the go. The display technology included anti-glare options, reducing eye strain during extended use.

In 1997, Lenovo launched the 2227 model, which represented a more advanced iteration with upgraded hardware. It featured faster graphics processing units (GPUs) and higher storage capacities, allowing professionals to handle more demanding applications. With its emphasis on portability, the 2227 came with enhanced wireless capabilities, ensuring users could stay connected without the hassle of wires.

Finally, the Lenovo 2226 model was significant for its focus on multimedia capabilities. It integrated superior audio and video components, making it an exceptional choice for entertainment enthusiasts. The incorporation of DVD drives and enhanced sound systems allowed users to enjoy movies and music with remarkable clarity.

In summary, the Lenovo 2226, 1996, 2224, 1997, and 2227 showcased the brand's commitment to innovation, performance, and user-centric design. Each model catered to specific user needs, making Lenovo a versatile contender in the competitive PC market of the late 90s and early 2000s.