Steps: Start-Run-Service. MSC- Find Windows Audio in Name-Select it with the left mouse button-Click the right mouse button-Select Properties-General-Startup Type.

Secondly, take the following measures

1, check whether the sound card, cables, speakers and other equipment are connected normally. If you are infected with virus, you should run anti-virus software to carry out comprehensive anti-virus.

2. Open the control panel-Add new hardware-Next. After searching, click "No, I haven't added this hardware yet", and then click Next. In the dialog box that appears, select Click Finish, turn off the computer, and then restart to add new hardware. Note that this is about shutdown and restart, not restart. Generally speaking, the problem can be solved after restarting.

3. Right-click my computer-Properties-Hardware-Device Manager and turn on the audio, video and game controllers to see if there is any problem, that is, to see if there is a yellow "?" In front of it. . If so, uninstall it first, then put it in the CD-ROM drive and reinstall the driver of this device.

4. If "Device Manager"-"Sound, Video and Game Controller" doesn't have sound card hardware, you have to find your sound card, including integrated sound card. The model must be accurate. After confirming that the sound card is found, put it into the system drive disk and install the sound card driver.

5. When there is sound, but there is no speaker, open the control panel-Audio-Video Equipment-Volume, and put a tick in front of "Put the volume icon in the taskbar". After restarting, the taskbar has a speaker.

6. When there is no sound or speakers, open the control panel-Add and remove programs-Add and remove Windows components, put a check in the CD-ROM drive, click "Next", and you will be prompted to install new hardware.

7, still can't solve the problem, so we have to reinstall the system and driver, and all the problems will be solved, but the premise is that all kinds of hardware are in good condition and there is no conflict between software.

8. When installing the sound card driver, the prompt "AC chip not found" appears. It may be a computer poisoning, a loose plug-and-play sound card that leads to poor contact, an illegal operation that mistakenly deletes the sound card driver, or an internal software conflict. This should be solved step by step for different reasons.

9. You can tap the computer body shell gently. After the laptop is covered, you can use a little more force than usual to restore some loose parts. Wait a while after shutdown, and then restart. Sometimes the sound problem will be restored.