Solution XP switch to Win7 system after watching video listen to songs have a murmur method

Cause analysis: In the Win7 system, Microsoft has given multimedia playback files a higher priority, trying to control the CPU to optimize the performance of multiple-body (playback), which can optimize the mainstream of HD performance. But for netbooks or lower-profile users will bring some negative effects, such as high CPU occupancy rate of a false panic or appear to play high-definition video when the sound and noise phenomenon;

Workaround:

1, first click the Start menu, and then open the Run dialog box and enter Regedit, return to open Registry Editor;

2, then expand to hkey_local_machinesystemcurrentcontrolsetservices audiosrv in turn;

3, in the right side of the window to find and double-click "DependOnService", and then delete the dialog box "Mmcss" value;

4. Exit Registry Editor, enter "Msconfig" in the Run dialog, switch to the "Service" tab in the open window, locate and uncheck the "Multi Media Class Scheduler" service item, click the Apply button, and then click OK to exit, Restart your computer.