For Windows 7 OEM SLP three things are required: Instead Windows 7 is activated from Factory using OEM System Locked Preinstallation. SLIC – System License Internal Codeįor Windows 7, the 25 digit product key was printed on a CoA but it is typically not used during Windows 7 Installation. The ACPI tables should load by default (if not select Access → ACPI Tables). Although most people shouldn't need to, one can check if they have a MSDM by installing RWEverything. Windows 10 Installation Media downloadable from Microsoft will automatically input these product keys during installation and as it's multi-edition it will automatically select the correct Edition corresponding to the Windows Product Key. MSDM – Microsoft Digital Markerįor systems sold with Windows 8 OEM and Windows 10 OEM the 25 digit product key is not seen printed on a label but is embedded in the MSDM table of the UEFI BIOS. In order to avoid having to manually type an alpha-numeric 25 digit product key and calling Microsoft for Product Activation on every single computer they manufacture they activate their devices using a different mechanism called OEM System Locked Preinstallation (OEM SLP). Original Equipment Manufacturers like Dell preinstall Windows on millions of Devices. What is OEM System Locked Preinstallation?
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