What happened to the computer without sound? Win7 system has no sound reason and solution

There are many problems with the Win7 system computer without sound. In addition to adjusting the basic settings, the user needs to debug the audio settings. Take a look at whether the sound card driver is normal, whether the service is disabled, and various solutions are required. Continue to eliminate. The general idea of ​​the user can be excluded from the comparison below.

What is the reason for the computer not having sound? In fact, it is very simple. It is nothing more than a few general problems, hardware problems or driver problems, or it may be a problem. The hardware problem is mainly that the sound card is broken, or the output sound interface is damaged. Generally, the sound card hardware is rarely damaged. Generally, we deal with computer failures. We are all software first hardware. The following Xiaobai with everyone to analyze the specific reasons is 啥, if you find it useful, please support!

If your computer has no sound, please try the following solutions, which can generally be solved.

I. Taskbar icon

If there is no sound in the computer, please check if there is a sound control icon in the task bar on the bottom right of the computer desktop, as shown below:
Computer desktop sound

As shown above, if there is this icon, it means that the sound card is installed on the computer.

1. Click the sound control icon with the left mouse button, and the sound volume adjustment switch control window will appear to see if the volume is adjusted to the lowest level. Is it set to mute? I used to help many novice friends. When dealing with a computer without sound, many of them either turn the sound to the lowest level or check the mute, which causes the computer to have no sound. This is a low-level mistake that novice friends often make.
Inverted triangle--custom

2, then click “turn on or off the system icon”,
turn system icon on or off

3, see the volume icon Yet? When you see that you are successful, you can choose to open the following behavior, you can see that the volume icon in the lower right corner has come out.
Set to open

4. After checking it, check whether the volume is adjusted and whether it is muted. After the break, the computer usually has a sound.

Second, hardware check

If there is no sound in the computer, please check if your speaker or ear has a problem. Is the speaker or earphone audio cable connected well with the computer, and the interface is plugged in correctly? .

I used to try it when I was a newbie or a newbie. I don’t know if I should insert that hole. When I use a speaker or an ear, I have no sound because I connect the audio cable to the computer. This is also very good now. Low-level mistakes, no sounds, how can there be sound? When I first used the computer, I thought that the two holes in the back could be inserted at random. Later, I realized that the original one is the audio input, the other is the audio output, and the earphone or the speaker must be plugged into the audio output interface. Difficult, there are icons in the interface, it is obvious, you can simply follow the icon to enter the seat is simple, of course, the more direct way is to ask people or lovers to help. If there is no sound in the computer before, if there is no sound, check the ear or the speaker is damaged, you can take a good try.

One more thing to note is that a typical desktop computer will have 2 pairs of audio interfaces distributed in front of and behind the chassis, so if the front interface is useless, try the rear socket. Because some computer installers may forget to connect the socket signal line on the front of the host to the motherboard.

Third, the driver check

Check if the computer sound card driver is installed properly or needs to be updated.

I used to encounter the situation that the computer system has no sound after reinstalling the computer system. Most of the cases are caused by the computer sound card driver not installed or incompatible. The solution is to find the driver corresponding to the computer sound card. Just fine. You can check whether the sound card driver is installed properly in the device manager:

1. Right click on the property &rarr on the desktop computer icon; open the device manager on the left side of the pop-up window.

2. In the pop-up window, select “Device Manager”, find the volume control icon
Device Manager
Volume Control

Sound Card Driver Installation Normal should be like this, there is a yellow exclamation mark on the sound card device!

3, if there is an exclamation point in the sound card driver, the hardware driver in the current system does not meet the driver of the computer, the solution can be to re-install the driver, you can directly use third-party software to install the driver, the current third party There are also a lot of software, everyone can Baidu, I will not introduce it here.

4, of course, you can also directly search Baidu to search the official website of your corresponding sound card driver, download it on the official website. This of course requires you to know more about your own sound card, here to introduce to you, how to view the brand model of your sound card.

Method One: Start -- Run -- Enter : dxdiag Command -- OK You can open the Direct X Hardware Diagnostic Tool and select the sound to see the sound card model. As shown below:
Direct X Diagnostic Tool

Method 2: Directly use third-party software to view. Of course, if you use this method to view, it is better to use third-party software to detect reinstallation of your computer.

Installation method is briefly introduced here.

Right-click the yellow exclamation point shown in the above image, click Reinstall Driver---Select Install from the list---Select the path to download the sound card--After all the way, the installation is complete.

Note: Although you can use this method to install the driver, but for the novice, it is recommended to use the third-party software directly, convenient and quick no worries!

Fourth, other reasons (usually rare)

1. If the sound card is not an integrated sound card, then open the chassis and check if the sound card is installed. If it is not installed, after rebooting, boot the test; if the sound card is already installed, then remove the sound card, and then clean the dust on the motherboard sound card slot and sound card (especially check if the golden finger has mildew, etc.) After cleaning, re-install it, and the general fault can eliminate the computer without sound. However, most of the current computers use integrated sound cards, and very few independent sound cards are used, so this problem basically does not happen.

2, there are reasons for computer sound card damage, computer audio output interface damage, etc., these conditions are rarely rare, if you encounter, then you can only take the professional computer repair shop to detect the repair.

According to the above introduction, step by step to solve the problem, I believe that your computer can solve the problem without sound, then it should be encouraged to wow, haha ​​~ or that sentence, if you feel useful Just support, your reply is the motivation for me to post.

3, the sound card driver is not normal, there is a yellow exclamation mark.

If the above volume control icon is not found on the desktop of the computer, it may be a driver problem. If you look at the driver problem, you will know how to solve it. Some of them are not displayed. The way to display it is as follows:

4, click on the inverted triangle in the lower right corner, select Custom in the pop-up window, you can see.
Win7 computer has no sound, mainly set in the above several directions. In addition to these debugging methods, users should pay attention to the small details that are easy to be ignored, such as being too close to the magnetic field, or plugging in the headphones and forgetting to pull them out.