Win7 Academy: Windows 7 under the sound of noise problem solving

        When watching HD movies under XP, the picture is smooth and the sound quality is very good. However, after upgrading to Win7, there may be a phenomenon that the picture is not stuck, but there is a popping sound and a murmur, and the driver is also upgraded and the video player is replaced. Since XP is normal, hardware failures can be eliminated, and even if the driver is upgraded with pops or noises, there is no driver compatibility issue. In the Win7 system, Microsoft gave higher priority to multimedia playback files, trying to optimize multimedia (playback) performance by controlling the CPU, which optimizes HD performance for mainstream notebooks. However, for a netbook or a low-profile old one, it will have negative effects, such as a high CPU usage, a fake crash, or a popping or murmur when playing HD video. The solution is to cancel the priority of Win7 video playback by entering the registry editor, expanding to HKEY_LOCAL_MACHINE\\SYSTEM\\CurrentControlSet\\services\\Audiosrv, double-clicking the name of the DependOnService” in the right window, and then deleting the dialog box. “MMCSS”Value. Exit the Registry Editor and type "msconfig" in the Start menu "Search Programs and Files" box and press Enter. Switch to the "Services" tab and find and cancel the "Multimedia Class Scheduler" service. . After clicking the "application" button, restart the notebook and play the HD movie again, there will be no slow voice. Note: Multi media Class Scheduler This simple explanation I personally think is that the Multimedia Class Scheduler Service (MMCSS) allows multimedia applications to get as much CPU time as possible.

It is emphasized that the "pop" & rdquo; & quoquo; murmurs are not the problems that occur when playing high quality MP3 files. However, problems that arise when playing high-quality MP3 files, and problems that occur when playing HD movies, can be tried using the same method.