Hackbgrt151 -

: Designed specifically for 32-bit and 64-bit x86 UEFI systems.

HackBGRT works as a custom EFI application that intercepts the boot process. It reads its configuration file, loads the specified BMP image, sets the appropriate coordinates, and then loads the Windows boot manager (bootmgfw.efi). hackbgrt151

As of 2025, Microsoft has hardened BGRT protections in Windows 11 24H2 (Build 26000+). HackBGRT151 does work on these builds due to new Hypervisor-Protected Code Integrity (HVCI) checks. The developer is working on “HackBGRTnext,” but for now, stay on 23H2 or older for boot screen customization. : Designed specifically for 32-bit and 64-bit x86

HackBGRT does not modify the Windows boot manager directly. Instead, it renames the original Windows boot loader (bootmgfw.efi) and puts its own loader in its place. The original Windows boot loader is then backed up. When your computer starts, it loads HackBGRT’s loader ( bootx64.efi ), which then displays your custom splash screen and finally passes control to the original bootmgfw.efi , loading Windows normally. As of 2025, Microsoft has hardened BGRT protections

Supports replacing standard OEM splashes with any user-designed 24-bit BMP image.

Poorly designed malicious firmware can permanently damage the motherboard (bricking) [1]. How to Protect Your System

The "151" often refers to a specific patch version or a magic value used to force replacement. The feature typically works by: