Why Win7 user web playback no sound problem

Recently, whether in the Win7 system or the Win XP system, users often encounter a strange phenomenon. There is no sound in the web to watch the video and listen to the music, but to switch to the local to watch the video and listen to music can be normal. The reason for this may be what optimization software you are using or installing and uninstalling a variety of decoders. Let's take a look at how to deal with this kind of problem!

1. Use the combination shortcut key +r to open the Run window, enter "regedit" carriage return confirmation. As shown in the following figure

2. Find HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindows NTCurrentVersionDrivers32 in the open Registry Editor to see if the window to the right has a "wavemapper" value. As shown in the following figure

3. See if the window on the right has a "wavemapper" value, if there is no new "Wavemapper" string value, double-click the new value, change its numerical data to "msacm32.drv" and then close the Registry Editor to restart the computer to complete the operation. As shown in the following figure

The above is to solve the win7 user web playback no sound problem, XP user's solution and the above scheme is the same, I hope that the above program can bring more help to everyone.

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