The next evening, TechWizard99 downloaded the Windows 7 Slic Loader 2.4.9 22 tool from a somewhat dubious source. He created a virtual machine on his computer to test it safely. He carefully followed the instructions provided with the tool, making sure to scan it for viruses before proceeding.
A small snippet of code in the computer's BIOS/UEFI.
Most modern loaders automate these steps into a single interface: Run as Administrator
If you’re interested in the theory behind OEM activation and SLIC (Software Licensing Description Table) for research or malware analysis, let me know, and I’ll explain how Microsoft’s OEM activation works and how such loaders attempt to spoof it.