What you really want to watch out for even more so than color change, is meat or poultry that has a bad odor or is sticky, tacky, or slimy to the touch. Let your other senses be your guide in these instances. Read more: The Color of Meat and Poultry - USDA.
Windows Management Instrumentation(WMI) is a set of extensions to the Windows Driver Model that provides an operating system interface through which instrumented components can provide information and notification.
Starting and Stopping the WMI Service. WMI runs as a service with the display name Windows Management Instrumentation and the service name winmgmt. WMI runs automatically at system startup under the LocalSystem account. If WMI is not running, it automatically starts when the first management application or script requests connection to a WMI namespace.