Win7 system playing web video no sound problem Troubleshooting

                                                                                                                                                                                         

The local player listens to songs and watches movies. But it plays the flash of Tudou, Youku, Yo and other websites, as well as RMVB and WMV videos in online movies. There is no sound in the webpage, and the music in the webpage can't be heard. You can hear the sound by playing videos, music, and FLASH animations on your hard disk. It can be concluded that this has nothing to do with the driver. Reloading the drive did not help. If you are experiencing such problems, solve them together:

This problem is also very common in Windows XP/Vista. It is not related to Windows 7. Generally, what optimization software is used or installation and uninstallation are used. Kind of decoder caused.

To solve this problem, click “Start”Menu→“Run"Enter“regedit” and press Enter to open the Registry Editor and click &ldquo in the left pane ; HKEY_LOCAL_MACHINE/SOFTWARE/Microsoft/Windows NT/CurrentVersion/Drivers32”, then check in the right pane for the value of "wavemapper". If not, right-click in the blank space on the right pane to create a new string value called “wavemapper”, and then double-click the value to set its “Value Data” as “msacm32.drv”, Restart the computer
to resolve the issue.

Hint: If there is no sound after setting according to the above method, please check if there is a volume icon in the system tray. If not, open “sound and audio device properties”, select “put the volume icon into the taskbar", and there will be a sound.