Microsoft uses a system called . OEMs (like Dell or Acer) pre-install Windows on their machines with a unique SLIC in the BIOS. When Windows boots, it checks for a matching OEM certificate and product key. If they match, Windows remains activated.
: Features SLIC auto-detection and can find the Windows partition even in non-SLIC recovery modes. Repair Mode 7 loader by hazar 1.6