How to help the computer without sound
The external speaker connected to the computer has no sound output. If you encounter such a situation, you can try to solve the problem with the following method. a bit.
1, observe whether the connection between the external speaker and the computer is correct. In general, the 3.5mm dual-channel plug of the external speaker audio input cable should be connected to the green 3.5mm socket at the rear of the chassis or to the audio output at the front of the chassis.
2, check the external speakers for faults. For example, active speakers can be tested using signal injection, and passive speakers can be tested with DC resistance using a multimeter.
3. Under the Windows operating system desktop, you can try to click the small speaker icon on the taskbar to cancel the system mute.
4, for a computer with 2 sound cards, you can open the control panel in the system, and set the speaker of one of the sound cards as the default device in the "Sound" setting. .
5, open the device manager in the system, if there is a yellow exclamation mark or question mark in front of the sound card, you can try to reinstall the sound card driver. The figure below shows the sound card in the normal state.
6, if you are not familiar with the various settings in the computer, you can use the third-party application software in the system to try to fix this problem, for example, you can use Tencent Computer Manager - Computer Clinic Try the "No Sound in Computer" module.
The first thing is that the audio settings are as follows:
Step: Start----Run----services.msc----In "Name" Find "Windows Audio"----left mouse button to select it----right-click---- select "Properties"-----General----Startup Type-----Automatic. Br>Second, take the following measures
1, check whether the sound card, cable, and speakers are connected properly. If it is a virus, you should run
antivirus for full antivirus.
2, open the control panel ---- add new hardware ---- next, after the search is completed, click "No, I have not added this hardware", click Next. In the dialog that appears, check "Click Finish, close the computer that is not, restart to add new hardware." Note that here is the shutdown and then restart, instead of rebooting. In general, the problem can be solved after rebooting.
3. Right click on "My Computer"----"Properties"---"Hardware"----"Device Manager", open "Sound, Video and Game
Controller "There is no problem, that is, whether there is a yellow "?" in front. If so, uninstall it first, then put it into the CD drive and reinstall the driver for this device.
4. If "Device Manager"----"Sound, Video and Game Controller" does not have sound card hardware, then you have to find your sound card, including integrated sound card, the model must be accurate, and you can find it in the confirmation. After the sound card, put the system driver disk and install the sound card driver.
5, when there is a sound but not a small speaker, open the control panel ---- sound and video equipment --- volume, in the "put the volume icon into the taskbar" before the check mark, restart the task bar There are small speakers.
6. When there is no sound and no small speakers, open the control panel----Add and delete programs----Add and delete Windows components, put them into the CD drive, and check the numbers in front of "Accessories and Tools". Click "Next", the system will prompt to install new hardware, follow the prompts to install.
7, can not solve the problem, then had to reinstall the system and drivers, all problems will be solved, but the premise is that the various hardware is intact, the software does not conflict.
8, when installing the sound card driver, there is a "can not find AC chip" prompt, it may be computer poisoning, or the sound card plug and play loose, resulting in poor contact, or may be accidentally deleted due to illegal operation Sound card driver, or internal software conflicts. This is to be solved step by step for different reasons.
9, you can gently tap the shell of the computer body, notebook
computer can be slightly larger than the usual force when the cover is closed, so that some loose parts are restored, wait for a while after shutting down Reboot, sometimes the sound problem will be restored.
First check if the sound card is properly driven, and then check the connection. Can't reinstall the sound card driver
Check the sound card driver to see if the small speaker in the lower right corner is muted
There is a problem with the sound card driver
Check the sound card driver
Check if the hardware is damaged. Also, is the sound card driver normal? Is there any problem with your stereo?
Check your sound card driver to see.
In the Explorer, look for device management sounds to see if there is a driver installed.
Repair with 360 Security Guard