Product Key For Windows 7 Ultimate My Id 00426 Oem 9141204 13000 [new]

The identifier you provided, 00426-OEM-9141204-13000, is a Product ID, not a Product Key. While they sound similar, they serve completely different purposes. A Product ID is generated during the installation of Windows to identify the version and licensing channel (in your case, OEM for Windows 7 Ultimate), while a Product Key is the 25-character alphanumeric code required for activation.  Review of Product ID vs. Product Key 

Windows 7 Ultimate Features:

What Does "OEM" Mean in This ID?

The presence of "OEM" in that ID string is very important. It stands for Original Equipment Manufacturer. The identifier you provided, 00426-OEM-9141204-13000 , is a

• Non-Transferable: OEM keys cannot be reused on new hardware or shared with others.
• Single-Use: They are sold for use with OEM hardware and are not eligible for Microsoft’s return/replacement policies.

• Activation: The product key is required to activate Windows 7 Ultimate. Without a valid product key, the software will not activate and you will not be able to use it.
• Genuine Software: The product key helps to ensure that the software is genuine and has not been pirated or counterfeited.
• Support: If you need to contact Microsoft for support, you will be asked to provide your product key.