The OEM (original equipment manufacturer) numbers are the manufacturer part numbers for the various components that have been installed in your computer. If you have not been given an explicit list of components by your system builder, you might assume that finding the information would be next to impossible. However, your operating system contains all of the needed information on your OEM numbers.
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Open the "Start" menu and click on the "Run" button.
Type in "msinfo32" and press "Enter."
Open the menu for "Components."
Click on any individual component to locate all salient information about it, including the OEM number(s).