What should I do if the win7 computer suddenly has no sound?

First of all. That is, the audio settings are as follows:

Step 1: Start running --- on"Name"Found it.

windows

audio"Select it --- the left mouse button --- right-click --- select.

attributes"--- regular --- startup type --- automatic.

Second, take the following measures.

1. Check whether the sound card, cable, speaker and other devices are connected normally. If you have a virus, you should run antivirus software for full antivirus.

2. Open the control panel--- Add new hardware--- Next, after the search is completed, click "No, I haven't added this hardware", click Next. In the dialog box that appears, check Click Done, shut down the computer, restart to add new hardware. Note that this refers to shutting down and then starting, not restarting.

In general, the problem can be resolved after rebooting.

3. Right-click "My Computer" --Properties ---Hardware--Device Manager" to open.

If so, uninstall it, then put it into the CD drive and reinstall the drivers for this device.

Then you have to find your sound card, including the integrated sound card, the model must be accurate, after confirming that the sound card is found, then put it into the system drive disk, and install the sound card driver.

--- the volume of the device, put a check mark before "put the volume icon in the taskbar", and put it in the taskbar after restarting.

There's a little horn again.

6. When there is no sound and no speaker, open the control panel ---Add and delete programs--- Add and delete.

windows component, put in.

New hardware, just follow the prompts to install it.

7. If you can't solve the problem, you have to reinstall the system and drivers, and everything is asked.

The problem will be solved, but only if the hardware is intact and the software is not conflicting.

8. When the sound card driver is installed, the "AC chip cannot be found" prompt appears, it may be that the computer is poisoned, or the sound card is plug and play loose, resulting in poor contact, and it may be that the sound is deleted by mistake due to illegal operation.

card drivers, or internal software conflicts. This has to be done step by step for different reasons.

Settle. 9. You can gently pat the shell of the computer body, and the laptop can be on the cover.

When the force is slightly greater than usual, so that some loose parts are restored, and wait for a period of time after shutting down.

Turn it back on again, and sometimes the sound problem will be restored.

Open the Audio Manager, click on the right jack settings, check Disable front panel jack detection, and click OK.

The specific steps are as follows: 1. Right-click on this computer and click Manage to enter the computer management interface. 2. Then, as shown in the figure, click the Device Manager button at the red arrow and follow to find the audio input and output. 3. Finally, right-click on the speaker and click Enable Device.

Computer generally refers to a computer. Computer, commonly known as computer, is a modern electronic computer machine used for high-speed calculation, which can perform numerical calculations, logical calculations, and also has the function of storage and memory.

The steps are as follows:

1. First of all, you need to see what the audio icon in the lower right corner looks like.

Generally, there are 2 states.

2. The status of the small cross indicates several problems.

1 The audio driver is not installed.

2 Audio service was stopped and banned.

3 Speakers are banned in the sound options.

The third type of occurrence may have been solved in the previous 2.

3. The first type: the audio driver is not installed, if there is an installation disk, you can click on the corresponding sound driver to install it, and restart the computer.

4. The audio service was stopped and banned.

The bottom left corner of the window icon is required. Click --- enter <>

Right-click on --- properties --- set auto-start (otherwise you need to set it up the next time you boot up) – and then click on start.

Wait a little after that.

5. Speakers are banned in the sound options.

Click on the small speaker image in the lower right corner of the computer, select "Open Volume Synthesizer" to see if the system sound is muted, if so, left-click on it.

Use the universal driver software to update the sound card, if it doesn't work, you can only reinstall the system, hope.

First of all, check the headphones or audio cable socket and so on, recheck it again, if it doesn't work, restart the computer to see if it's normal, and update the driver if it doesn't work.