Why does a computer sound?

For non-phonetic symbols:
1. Insert the Windows XP CD-ROM to your computer's CD-ROM or DVD-ROM drive. Hold down the Shift key while inserting the CD-ROM to prevent the disc from running automatically.
2. Click start, and then click Run.
3. In the open box, type cmd and click OK.
4.
G:
CD i386
Expand sndvol32.ex _ c: \ windows \ system32 \ sndvol32.exe
(Put G:
CD i386
Expand sndvol32.ex _ c: \ windows \ system32 \ sndvol32.exe copy, paste, and confirm)

Common situations:
1. Right-click my computer-Manage-Device Manager

First, check if the driver is not installed.

If there is a yellow exclamation mark, it is not installed.

The computer has no sound problems. For example, when a computer is turned on without sound, the small speakers in the taskbar are lost, which often makes the cainiao unable to do anything. In practice, everyone will encounter similar problems. I used my computer three times. After repeated exploration, I finally found several solutions. Now I will make a contribution for the reference of netizens.
First of all, the absence of sound on the computer seems simple. In fact, sometimes the problem is complicated, involving both hardware and software. Therefore, you must first identify the cause, check whether the software or hardware is faulty, and then remedy the problem. Never let the cause be unknown. if the cause is not clear, the system will be paralyzed and the trouble will increase.
1. Check whether the sound card, connection line, and speaker devices are connected properly. Run anti-virus software to prevent viruses;
2. Right-click "my computer"-"properties"-"hardware"-"Device Manager" to enable "sound, video, and game controller, check whether there is a yellow "in front of it. ". If any, reinstall the driver of the device to solve the problem;
3. When there is sound but there is no small horn, open the control panel-sound and video device-volume, and place the right sign before "place the volume icon in the taskbar;
4. When there is no sound and no small speakers, open the control panel-add and delete programs-add and delete Windows Components, check the attachments and tools, click "Next", and then, shut down and restart. The system prompts you to install new hardware. Follow the prompts to install the new hardware;
5. Uninstall the sound card driver, and reinstall or upgrade the sound frequency driver;
6. When the sound card driver is installed, the prompt "cannot find the AC chip" may be caused by computer viruses, accidental deletion of the sound card driver due to illegal operations, or internal software conflicts. The solution is to reinstall the system and driver.
7. Ignore it. Wait for a while before restarting the system. Sometimes the voice problem is solved by yourself. You can try it.
Supplement:
Look at the sound icon-right-click to open the volume control-to see if there is any mute or lowest