The computer turned off the monitor and then turned on the speaker, and there was no sound, and the

1. Plug the audio line back in and start it again.

2. Start - Settings - Control Panel - Sound and audio equipment, and turn the volume of the device from low to high. Then put a volume icon in front of "Put the volume icon in the taskbar" and click OK.

5. Right-click My Computer - Properties - Hardware - Device Manager. "Sounds, ** and game controllers", see if there is a yellow one in front"? "No., there is, it means that the sound card driver is missing, if there is yellow"!

indicates that the sound card driver cannot be used normally, and the uninstallation is yellow! No. of the sound card driver. And replace the sound card driver with the driver life or the driver wizard.

Related to the DP interface, after turning off the monitor, the graphics card will automatically run at a reduced frequency, and then open the application that the monitor originally ran (such as 3D games) will be silent. Moreover, after the display is turned off on the DP interface, the remote desktop will get stuck.

I gave up DP and used HDMI back, so there was no such problem. If the graphics card has both DP and HDMI interfaces, another way is to buy a graphics card spoofer and plug it into the HDMI port.

If there is no sound from the speakers of the laptop with a DP external monitor, the following situations may occur:

1.Check that the external monitor or speaker is properly connected to power and turned on.

2.Check that the audio cable of the monitor or speaker is plugged in correctly, it is possible that the jack is not plugged in tightly or is plugged in backwards.

3.Check your laptop's sound settings and set the audio output to a DP external monitor or speaker.

4.Try updating the sound card driver, if the driver is outdated or malfunctioning, it will also cause no sound from the external speaker.

5.If there is a signal converter between the computer and the display, the configuration of the converter may also cause the audio to not be transmitted. Check if the settings of the converter are correct.

If the above methods cannot solve the problem, you can contact professional maintenance personnel for inspection and repair to ensure that the equipment is being used frequently.

Here's how to fix it:

2. Then set the audio of the graphics card as the default setting and dust backup.

When the main unit is connected to the monitor with a DP cable, there is no sound from the main speaker, because the audio is being transmitted to the display.

After connecting the host computer and the monitor with a DP cable, if the default audio device is monitor audio, the sound signal will be transmitted to the monitor, and the host speaker will have no sound output.

To output sound from the host speaker, you can go to the control panel and set the local speaker as the default audio device in Audio Management.