• Ensure that video resolution is set to less than 1152 x 864.

If these actions do not correct the problem, run the diagnostic programs (see “Diagnostic programs” on page 109 for instructions). If you need technical assistance, see Chapter 11 “Getting information, help, and service” on page 111.

Invalid disc or no disc found message

Symptom: Invalid disc or no disc found message

Actions:

Ensure that a DVD disc is in the drive with the shiny side of the disc facing down.

Ensure that video resolution is set to less than 1152 x 864.

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 109 for instructions). If you need technical assistance, see Chapter 11 “Getting information, help, and service” on page 111.

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 109 for instructions). If you need technical assistance, see Chapter 11 “Getting information, help, and service” on page 111.

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 97

“The mouse or pointing device does not work” on page 98

“The pointer on the screen does not move smoothly with the mouse” on page 98

“The fingerprint reader does not work” on page 98

“The wireless keyboard does not work” on page 99

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.

Chapter 10. Troubleshooting and diagnostics 97

Page 111
Image 111
Lenovo 4514 Intermittent problems, Keyboard, mouse, or pointing device problems, Invalid disc or no disc found message

4485, 4514, 4480, 4471, 4496 specifications

Lenovo's ThinkPad series has long been synonymous with durability, performance, and enterprise-grade features, and the models 4474, 4473, 4477, 4468, and 4466 are no exception. Each of these models brings distinct characteristics and technologies tailored to meet the diverse needs of users ranging from casual consumers to business professionals.

The Lenovo 4474 model excels in portability and performance. Featuring a lightweight chassis, it is designed to be carried easily for on-the-go professionals. It is equipped with Intel’s latest processors, ensuring quick response times and efficient multitasking capabilities. The display, often a Full HD resolution, enhances the multimedia experience, making it suitable for presentations and video playback.

The Lenovo 4473 model stands out with its robust security features. It comes with a fingerprint reader and an integrated Trusted Platform Module (TPM) to provide an added layer of security for sensitive information. This focus on security makes it an excellent choice for businesses that prioritize data protection and compliance with various regulations.

The 4477 model is recognized for its exceptional battery life. With energy-efficient components and optimized power management technologies, users can expect extended productivity without the need for frequent charging. This model is perfect for users who need to work remotely or in environments where power sources are not readily available.

For those seeking a balance between versatility and performance, the Lenovo 4468 model is an appealing choice. This model supports a wide range of connectivity options, including USB-C, HDMI, and Ethernet ports, catering to various peripheral needs. Additionally, it typically features an ergonomic keyboard and a responsive touchpad, enhancing the user experience for long typing sessions.

Lastly, the Lenovo 4466 brings innovation in terms of display technology. With options for touchscreens and high-resolution displays, this model caters to creative professionals who require precise color accuracy and vivid graphics. It offers a solid performance for design tasks, video editing, and even gaming, making it a versatile option for different scenarios.

In summary, Lenovo’s models 4474, 4473, 4477, 4468, and 4466 are tailored to address specific user needs, whether it be portability, security, battery life, connectivity, or display technology. These ThinkPad series laptops continue to exemplify Lenovo's commitment to quality and innovation in the computing space.