Why is there no sound on the Web page to open video?

General browser in the lower right corner will have a screen voice button, we click on it can, the following figure

Two. If the system has its own Internet Explorer is likely to be caused by computer viruses, processing methods are as follows

1. First we open IE browser as shown

2. Then we click on the following "Settings"-"Internet Options" to open the entry effect as follows.

3. Then we'll find the "advanced" in the Setup dialog box as shown

4. Below the advanced interface to find "play sound in the Web page" After we click "OK", we finished the operation as shown

Three. Now in the browser interface we click--Tool--interent option---advanced, find "allow active content to run on my computer file" and click "OK" as shown

Three: If the above method is not possible to try to modify the registry

1. In the lower right corner of the desktop click "Start"-"Run" open

2. One of us in the run we entered "regedit" after we found "OK" as shown in

3. After we navigate to the registry: HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindows NTCurrentVersionDrivers32 as shown

4. Find Wavemapper and confirm whether he exists as shown

5. If we do not right-click to create the string "Wavemapper", the value is "Msacm32.drv".

6. Then restart the computer to complete all the operation steps

Note: If the above method still cannot be solved we can try to reboot the computer, and look at the client to see if the computer itself is not sound.