Win7 system playback video has been appearing noise effects how to solve the problem?

The win7 system plays video and there is always a noise effect. How to solve it?

The solution is as follows:

1. Press “win+r” at the same time to open the run window, enter “regedit” in the run box and click Enter;

2, enter the registry editor window, and then expand "HKEY_LOCAL_MACHINESYSTEMCurrentControlSetservicesAudiosrv";

3, find and double-click "DependOnService" in the right window, delete the value data in the pop-up window Drop and then exit the window.

4, Next, click the “win” key on the keyboard, then enter “msconfig” in the search box and click Enter;

5, then pop up In the system configuration window, switch the interface to the “Services” column, then remove the “Multimedia Class Schedu” option from the “Multimedia Class Schedu” project, and finally click on the “Applications” and “OK” and “Exit” window. You can;

6. After all the steps are set, once again open the video on the win7 computer, you will be pleasantly surprised to find that the noise disappears without a trace.