Metabolix has written HackBGRT, a tool that changes the Windows boot logo on UEFI systems. It works on Intel 64-bit UEFI systems, with Secure Boot disabled. “HackBGRT is intended as a boot logo changer for UEFI-based Windows systems. When booting on a UEFI-based computer, Windows may show a vendor-defined logo which is stored on the … Continue reading HackBGRT: changes Windows boot logo on UEFI systems