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Win7 computer is Real-time delivery time predictionsmuted and cannot play sound. With the update of hardware equipment, hardware failure has become one of the headaches for many computer users. The Win7 computer has a problem that the sound cannot be played during use, causing users to be unable to use it normally. This article will analyze this problem from many aspects and provide solutions. I. Hardware failure The reason for the silentness of Win7 computer may be caused by computer hardware failure.Checking the audio equipment is the first step. Users can try to plug in headphones or speakers. If the sound can be played, the problem may be in the built-in speaker of the computer. If this happens, the built-in speakers of the computer need to be replaced or repaired. II. Driver problem In Win7 computers, the audio device needs the correct driver to work normally. If the audio driver of the computer does not exist or is not installed correctly, it will cause the computer to mute. Use the device manager to determine whether there is an audio device and the correct driver. If the drivers have been installed, users can try to uninstall and reinstall them to ensure that these drivers are not the cause of the Win7 computer to mute. III. Volume and speaker settings Sometimes, the volume of the built-in or external speakers of the Win7 computer is muted or lowered, resulting in the inability to hear the sound.In this case, users should check the volume settings first. Right-click the volume icon on the Windows taskbar and select "Turn on Volume Control". Make sure that the volume is not set to "mute" or to the lowest. In addition, users can also view more audio settings on Win7 computers, including audio formats, default output devices, etc. IV. Sound card problem If there is no problem with the built-in or external speakers of the Win7 computer, then the sound card may be loose or broken. In this case, users can try to re-plug and unplug the sound card or replace it with a new sound card. If this problem cannot be solved, the user should take the computer to a professional repair center for better help. V. Dust or dirt The internal structure of the computer is very complex, and dust or dirt may fall off, affecting the sound effect of the computer.In this case, users can use compressed air or computer cleaner to thoroughly clean the inside of the computer to ensure that it is not affected by dust or dirt. In general, when the Win7 computer loses sound, there are many reasons why this may happen. We need to determine the cause according to the specific symptoms and take appropriate measures to fix the problem. If none of the above methods can solve the problem, then users can consider finding a professional computer repair center for repair.

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