History and purpose Firmware vendors often embed a manufacturer logo that displays during system startup. Changing that image permanently normally requires modifying firmware; HackBGRT provides a user-space alternative for UEFI systems by inserting an EFI application into the boot path that draws a custom splash without flashing firmware. The project evolved through multiple releases adding robustness (image conversion, EFI entry handling, AArch64 support, logging) and addressing Windows/firmware changes that interfere with third‑party boot loaders.

, the command prompt flickered, and the files moved to the EFI partition. "Rebooting," Leo whispered.

Legal/compatibility notes

Replaces the OEM boot splash screen without flashing the physical system BIOS.

This tool is perfect for anyone looking to give their computer a personal touch or for IT administrators who want to customize boot screens for a fleet of devices for a consistent brand experience.

Hackbgrt-1.5.1 is waiting for ACPI tables. This is normal for first boot after installation. On subsequent boots, it should be faster.

Disclaimer: Modifying UEFI settings and EFI partitions carries a small risk of boot issues. Ensure you have backups and understand how to enter your UEFI settings. If you'd like, I can: Provide a for common HackBGRT errors. Explain how to properly format images for the best result. Explain how to re-enable Secure Boot while using HackBGRT.

The Metabolix HackBGRT Github Project bypasses this issue entirely. Instead of flashing volatile hardware firmware, HackBGRT injects itself as a custom UEFI application during the boot sequence. It intercepts the boot phase, overwrites the image data in the BGRT memory table, and hands execution back to the Windows Boot Manager. This architecture ensures you can safely use custom startup splash screens without modifying core motherboard firmware. Core Technical Specifications of Version 1.5.1

If you're ready to give your boot screen a makeover, here is the basic workflow: Preparation Secure Boot