Philips Sound Device Problem

My sound device for my PC isn't working right. When I try to play a song with any type of Media Player, I get a message.

Quote:

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Originally Posted by Windows Media Player

Windows Media Player cannot play the file because there is a problem with your sound device. There might not be a sound device installed on your computer, it might be in use by another program, or it might not be functioning properly.

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EDIT: It was made in 2000, and the Model is: MMS 203/17
14v 50-60Hz

EDIT2: I've restarted the computer, and it worked again. Can an Admin please close this thread?