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Why does the computer have no sound headphones? Why does the win7 system have sound

Four seas comprehensive report: what's the matter with no sound in the computer? There are many reasons, but generally not more than these three situations. First, the sound card driver of the computer is not installed properly, which is the common reason for no sound in the computer; second, the audio equipment service of the computer is banned; third, the equipment affected by the computer is broken and cannot work normally.

If you want to know how the computer does not have sound, as long as you check the above three conditions at one time, you will find out the reason. The specific steps are as follows:

Step 1: first, check whether your audio, sound card and other hardware equipment are in good condition, whether the connection is secure, and whether there is poor contact.

Step 2: right click 'my computer' --- 'properties' ---' hardware '---' device manager ', open' sound, video and game controller 'to see if there is any problem, that is, see if there is a yellow'? 'in front. If yes, it is proved that the sound card driver of the computer is not installed properly, download the sound card driver and reinstall it.

Step 3: check whether there is a small horn shaped icon in the taskbar. If not, open the control panel - add and remove programs - add and remove windows components. Check the "accessories and tools" and click "next". Then, shut down and restart the computer. The system will prompt you to install new hardware and install it according to the prompts.

Step 4: the sound card driver is installed, but it is not installed correctly. At this time, you need to uninstall the current card driver, download it again or upgrade it for installation.

Step 5: when a certain virus or trojan in the computer will also cause the computer to have no sound, at this time, it is necessary to use anti-virus software to carry out overall anti-virus on the computer. If not, it is only to reinstall the system.

Step 6: do nothing. Sometimes the computer has no sound because of the mechanical failure of the computer. Shut down the computer and restart it later to recover automatically.

The above is a summary of the reasons why there is no sound in your computer. If there is no sound in your computer, you will find out the reasons one by one according to the above methods, and hope to help you solve the problem according to the corresponding solutions given by Xiaobian.