As most systems administrators know, you should log into your computer as a normal domain user who does not have elevated privileges in your Active Directory domain and only run administrative programs with elevated privileges when necessary. You could hold down shift, right click the shortcut, and select “Run as different user” to run a program as a user who has elevated privileges in your Active Directory domain, but there’s an easier, more efficient way to run programs that always require elevated privileges.
Problem: An important audio codec is missing from 64bit versions of Windows Vista and Windows 7. Some media files generate an error when using Windows Media Player. Third party media players seem to be affected as well, since some will play the video portion with no audio, and others won’t play the media file at all. This problem even occurs with media files downloaded from Microsoft. The Windows Media Player specific error is: “Windows Media Player cannot play, burn, rip, or sync the file because a required audio codec is not installed on your computer.