Why did the machine have no sound since the system was installed?

The sound card is not installed.

Advanced Control Panel – Sound & Audio Devices, see if the options inside are all greyed out. That's where the little horn was adjusted. But if it is gray, it means that the sound card driver is not installed properly.

Or My Computer --Right Click --Manage --Device Manager and see if there is a question mark on the audio device.

If you have one, click to update the driver, put the disc in it, and it will be installed automatically. However, it is best to go to the driver disc and find the sound card driver to install. Generally in the sound or audio folder, in the realtek folder.

Because sometimes the system may find it wrong. Or some exe format drivers will not be automatically added and installed.

PCI device, system PCI bus device, sound card belongs to it, regardless of whether the sound card is integrated or not. If you don't have the speaker icon (sound, **, and game controller) in the Device Manager, the sound card driver is not installed.

Or is this method the best:

Go to the driver disc and find the sound card driver to install. Generally in the sound or audio folder, in the realtek folder. Because sometimes the system may find it wrong. Or some exe format drivers will not be automatically added and installed.

No sound card driver installed.

No sound after reinstalling the system Workaround:

1 There is sound before installing the system, and there is no sound after installing the system, the biggest possibility is that you did not install the sound card driver when you installed the system, of course, we can't jump to conclusions before finding out the specific reason. We right-click on "My Computer", click on the management option, and then find the Device Manager to enter the corresponding operation interface.

2 Then we find "Sound, ** and Game Controller" click on it, find the options related to sound (generally the option containing audio is a device related to the sound card), first see if it has a question mark, if there is a question mark, prove that the sound card driver is not installed, install it.

3 If you see an exclamation mark instead of a question mark after opening the Xuanchang potato item, it proves that your sound card has installed the driver, but the driver may be damaged or not compatible with your sound card, at this time we need to uninstall the original driver, and then install the matching driver.

4 Some friends may have regained the system sound after the above operations, and they have not been happy for long, the problem has come, the sound disappeared after the computer restarts, and there is no question mark or exclamation mark after opening the device manager, and reinstalling the driver can not solve the problem, many novice friends may feel at a loss, in fact, there is a solution to this situation.

5 We also right-click on "My Computer", still click on the "Manage" option, but this time we don't look for the Device Manager option, but look for the "Services and Applications" option, and after finding it, we click on the "Services" option, and then click to enter the list of services in Windows.

6 And today our protagonist is the Windows Audio service, according to the description we can know that it is to manage the audio device based on the Windows program, turn it off all audio devices and sound effects will not work properly, so we have to confirm whether it is turned on, if it is not turned on Click to start, then the sound you dream of may appear.

7 Some friends may ask, I didn't turn off this service, why did it stop, in fact, the reason is very simple, we use the security guard to optimize the boot startup item is likely to prohibit it, so the service will be stopped, the system has no sound, we had better set the startup type to automatic when we turn on the service, so that it will load itself as we boot up. Lead is swift.

8 Of course, in addition to the above reasons, turning the system to silent, sound card damage may cause our system to have no sound, of course, the probability of this happening is very small, but there is also a probability of happening, so listed here, if other methods can not solve your problem, you may wish to see if it is caused by them.

You open the "Sound & Audio Devices" in the control panel and see if the ** settings inside are incorrect, or set to "Mute".

The prerequisite is that the sound card driver is installed correctly.

Install the sound card, check if the sound card matches your model, and check the speakers.

If your sound card driver is not installed, there will be no problem.