Solve the problem that the video is humming after watching xp switch to win7 system

Analysis of the cause: In Win7 system, Microsoft gave higher priority to multimedia playback files, trying to optimize multi-body (playback) performance by controlling the CPU, which can optimize HD performance for mainstream books. However, for netbooks or users with lower configuration, it will bring some negative effects, such as a high CPU usage, a false crash, or a popping and murmur when playing HD video;

:

1. First click on the Start menu, then open the Run dialog and type regedit, press Enter to open the Registry Editor;

2, then expand to HKEY_LOCAL_MACHINESYSTEMCurrentControlSetservices Audiosrv;

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

4, then exit the registry editor, in the run dialog box Enter “msconfig” Enter, in the window that opens, switch to the "Services" tab, find and uncheck the "Multi media Class Scheduler" service item, then click the Apply button, then click OK to exit, restart The computer is fine.