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An application or service has shut down this hardware device. (Code 44)
http://www.vistaarticles.com/articles/504/1/An-application-or-service-has-shut-down-this-hardware-device.-%28Code-44%29
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Published on 11/16/2007
 
An application or service has shut down this hardware device. (Code 44)

An application or service has shut down this hardware device. (Code 44)
Restart the computer.