All credits goes to Metabolix for his tool called HackBGRT. This tool will allow you to change the logo when Windows boots up! I've repackaged it and created a simple script to make the install / ...

When booting on a UEFI-based computer, Windows may show a vendor-defined logo which is stored on the UEFI firmware in a section called Boot Graphics Resource Table (BGRT). It's usually very difficult ...