Hackbgrt-1.5.1 Fix -

Once you press Install, a window (configuration) and a MS Paint window will open.

injects itself as a driver ( .efi ) or kext ( .kext ) at step 2.5: Hackbgrt-1.5.1

Using boot-level modifiers carries inherent risks that you should consider: Once you press Install, a window (configuration) and

: Specifically designed for modern UEFI firmware rather than older BIOS systems. Once you press Install

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