Why is there no sound from the computer?

Reasons why the computer has no sound: 1. The computer is muted and the computer sound volume has been adjusted to the lowest level; you need to click the sound control icon in the taskbar to open the sound volume adjustment switch control window and increase the volume. That’s it. 2. The sound card or sound card driver is faulty. If you need to replace the sound card, you can reinstall the sound card driver. 3. The output sound interface is damaged, just replace the sound interface.

The operating environment of this tutorial: Windows 7 system, Dell G3 computer.

There are actually only two reasons why the computer has no sound, computer hardware problems and software problems:

• Hardware problems are mainly caused by the sound card being broken, or The output sound interface is damaged, etc. Generally, the sound card hardware is rarely damaged. If you encounter no sound due to hardware problems.

• Software problems are relatively common and cause the computer to have no sound.

So how to determine whether it is a hardware problem or a software problem? Let’s explain in detail below.

Generally when dealing with computer problems, we deal with software first and then hardware. If your computer has no sound, please try the following solutions, which can usually be solved.

1. If the computer has no sound, please first check whether there is a sound control icon in the taskbar at the lower right corner of the computer desktop, as shown below:

As shown in the picture above, if there is this icon, it means there is no problem with the sound card installed on the computer. Then click the sound control icon with the left mouse button, and the sound volume adjustment switch control window will appear. Check whether the volume is adjusted. Adjust it to the lowest level. Have you checked Mute? Selecting mute causes the computer to have no sound. This is a stupid mistake that novice friends often make.

If you cannot find the volume control icon above on the computer desktop, it may be a driver problem. You will know how to solve the driver problem as follows. Some of the driver problems are not displayed. The method to make it appear is as follows:

If there is no "Small Speaker" on the right side of the taskbar, enter the Start---"Control Panel--Sound and Audio Devices" command to open the "Sound and Audio Device Properties" dialog box, as shown below:

As shown in the picture above, mark √ and click OK. There will be a sound icon in the taskbar at the lower right corner of the desktop. Check again to see if the volume is adjusted properly and whether mute is clicked. Rest. After that, the computer usually has sound.

You can also click the "Sound" tab in this dialog box, then click one of the program events (such as a program error) in the "Program Events" column, then select a sound type, and then look to the right Whether the "Preview" button is black. If it is black, the sound card is normal. The cause of the fault may be that the system volume is too low, or mute is set, or the speaker is faulty.

Other reasons: If there is no sound card option in the "Device Manager" window, and the sound card is an integrated sound card, then restart the computer and enter the BIOS program. Then check whether the peripheral device option in the BIOS is set to "Disabled", if so, change it to "Enable". If this item is set to "Enable", the motherboard sound card circuit may be damaged, and the sound card circuit can be repaired. It can only be taken for repair.

2. If there is no sound from the computer, please first check whether there is a problem with your speakers or headset, whether the speaker or headset audio cable is well connected to the computer, and whether the interface is plugged in correctly.

I previously found that when a friend used a speaker or headset, there was no sound because the audio cable was connected to the computer. This is also a very low-level mistake. How can there be sound when there is no signal connected to the speaker? ?Some of them are directly connected to the microphone interface of the computer. I find it funny when I see it. There is an audio interface and a microphone interface. You must check it out for yourself. There are icons on it. It is very obvious. A novice will not understand it. Asking people around you and reading the manual is better than anything else. If there was sound from the computer before and now there is no sound, check whether the headset or speaker is damaged. You can try a good one.

It should also be noted that generally desktop computers will have 2 pairs of audio interfaces, distributed on the front and back of the chassis, so if the front interface is useless, you can try the rear socket. Because some computer installers may forget to connect the signal cable from the socket on the front of the host to the motherboard.

3. Check whether the computer sound card driver is installed properly

In the past, we often encountered situations where the computer had no sound after reinstalling the computer system. This situation was mostly caused by the computer sound card driver not being installed or being incompatible. The solution was to find the driver corresponding to the computer sound card and install it. How to find out whether the computer sound card driver is not installed properly? We can enter My Computer---right-click---select---Properties--Hardware--Device Manager as shown below:

Click Device Manager to enter the following computer hardware driver status to view, as shown below.

The picture above is a screenshot of the sound card driver installed normally. The screenshot of the sound card driver installation problem is like this. There is a yellow exclamation mark on the sound card device ! as follows :

If there is an exclamation mark in the sound card driver, it means that the hardware driver in the current system does not meet the computer driver. The solution can be to change the system again. Of course, this is not necessary as long as you find it. For the computer sound card model, just go to Baidu to find the driver and install it.

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