Windows 7 Help Forums - View Single Post - Windows Media Player - Frequent "not responding" status
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01 Sep 2012  
gigagiggles

Windows 7 Home Premium x64
 
 

Is the music library on an external USB hard drive? If it is, perhaps you've caught the hard drive "napping" on idle. If you were to access the hard drive directly and then run WMP, the wake-up would occur before the run.
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