Win7 "can not measure video playback performance" how to do

Case 1: Since the replacement of a graphics card to replace the previous HD2400 HD6570 1G DDR3 installed in the driver after the win7 refresh score is adjusted after the Windows media decoding video playback performance Metrics
Case 2: After reinstalling the system, the system cannot be installed after the decoder update driver is installed.
Workaround:
C:WindowsSystem32”“msmpeg2vdec.dll”, “msmpeg2adec.dll&rdquo ; and “mfds.dll” These three file names have not been modified, if modified, restored to the above name, it can be. Generally, these three file names are changed to be followed by *.blk. It is OK to modify it.