Win7 64-bit system computer score appears "can not measure video playback performance" how to solve

Analysis of the cause:
It may be caused by the page file setting being too small or the page file being placed in the virtual disk virtualized by the ramdisk.
Workaround:
1, use the driver life software or update the graphics card driver to the official website;

2, enter C: WindowsPerformanceWinSAT, check whether there is a media video file under the directory, if not If you want to download this folder to backup and fill the missing files;
3, select ld and TEM in the system properties - environment variables - system variables & rdquo;, check whether the path of these two variables is C: WindowsTemp, if not, is changed to C:WindowsTemp.

4. Check C: Windows system32 "msmpeg2vdec.dll", "ldmpeg2adec.dll" and "mfds.dll" and these three file names have been modified, if modified , restore the file to the above name.