Lenovo 4223, 4228, 4229 manual Audio problems, No audio in Windows

Models: 4229 4223 4228

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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 92

“Hard disk drive problems” on page 91

“Keyboard, mouse, or pointing device problems” on page 92

“Monitor problems” on page 93

“Networking problems” on page 95

“Option problems” on page 96

“Performance and lockup problems” on page 97

“Printer problems” on page 99

“Serial port problems” on page 99

“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.

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.

Verify that the audio device drivers are correctly installed. See Microsoft Windows help system for more information.

Chapter 11. Troubleshooting and diagnostics 87

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Lenovo 4223, 4228, 4229 manual Audio problems, No audio in Windows

4229, 4223, 4228 specifications

Lenovo has long been recognized for its commitment to producing high-quality computing solutions, and the ThinkPad line is no exception. Among its various models, the Lenovo ThinkPad series 4228, 4223, and 4229 stand out for their robust features and reliable performance, making them ideal choices for business and professional use.

The Lenovo ThinkPad 4228 series is engineered with a focus on durability and performance. One of its key features is the powerful Intel Core processor range, which ensures that users can manage demanding applications and multitask efficiently. Alongside this, the device typically comes equipped with ample RAM, providing speed and responsiveness that enhances productivity.

Moving to the ThinkPad 4223, it streamlines user experience with advanced connectivity options. The inclusion of multiple USB ports, HDMI, and Ethernet capabilities allows for seamless integration with various devices and networks. The 4223 model often houses a backlit keyboard, enabling users to work effortlessly in low-light environments. This model puts a strong emphasis on portability, making it a reliable companion for professionals on the move.

The ThinkPad 4229 takes connectivity a step further by offering options like Wi-Fi 6 and Bluetooth, ensuring fast and stable connections whether in the office or on the go. This model is often equipped with a higher resolution display, contributing to a better viewing experience for video conferencing and presentations. Its extended battery life is a notable feature, allowing users to remain productive without the constant need for recharging.

All three models in the 422x series boast Lenovo’s robust security features, including fingerprint readers and TPM (Trusted Platform Module), which safeguard sensitive data against unauthorized access. Furthermore, the reputation of Lenovo ThinkPads for their exceptional keyboard layout ensures that users can type comfortably over extended periods, reducing strain and increasing efficiency.

In summary, the Lenovo ThinkPad 4228, 4223, and 4229 models represent a blend of power, durability, and user-friendly design. With their focus on connectivity, performance, and security, these laptops cater perfectly to the needs of professionals and businesses, confirming Lenovo's status as a leading manufacturer in the world of computing technology. Whether you need a rugged workhorse for heavy tasks or a portable device for meetings, the ThinkPad series provides versatile solutions to meet any requirement.