Select the problem your computer is experiencing from the following list:

“Audio problems” on page 87

“CD problems” on page 88

“DVD problems” on page 89

“Intermittent problems” on page 91

“Keyboard, mouse, or pointing device problems” on page 91

“Monitor problems” on page 92

“Networking problems” on page 94

“Option problems” on page 97

“Performance and lockup problems” on page 98

“Printer problems” on page 99

“Serial port problems” on page 100

“Software problems” on page 100

“USB problems” on page 101

Audio problems

Select your symptom from the following list:

“No audio in Windows” on page 87

“An audio disc or AutoPlay-enabled disc does not automatically play when it is inserted into a drive” on page 88

“Sound comes from one external speaker only” on page 88

“No audio in DOS applications or games” on page 88

No audio in Windows

Symptom: No audio in Windows

Actions:

If you are using powered external speakers that have an On/Off control, verify that the On/Off control is set to the On position and the speaker power cable is connected to a properly grounded, functional ac electrical outlet.

If your external speakers have a volume control, verify that the volume control is not set too low.

Double-click the speaker icon in the Windows notification area. A master volume-control window opens. Verify that the Mute settings are not checked and none of the volume settings is set too low.

Some models have a front audio panel you can use to adjust volume. If you have a front audio panel, verify that the volume is not set too low.

Verify that your external speakers (and headphones, if used) are connected to the correct audio connector on the computer. Most speaker cables are color-coded to match the connector.

Note: When external-speaker or headphone cables are attached to the audio connector, the internal speaker, if present, is disabled. In most cases, if an audio adapter is installed in one of the expansion slots, the audio function built into the system board is disabled; use the audio jacks on the adapter.

Make sure that the program you are running is designed for use in the Microsoft Windows operating system. If the program is designed to run in DOS, the program does not use the Windows sound feature and must be configured to use SoundBlaster Pro or SoundBlaster emulation.

Chapter 10. Troubleshooting and diagnostics 87

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Lenovo 1997, 2224, 2226, 2208, 2221, 2209, 2227, 2010, 1996, 2002 manual Audio problems, No audio in Windows

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.