If you have faced an abrupt shutdown before facing the black screen, it might be due to the startup disk malfunction. Depending on your device type, you can power cycle your Mac using one stock ROM (firmware) of the methods below. If your Mac cannot shut down and startup normally, […]

Finally, the BIOS connects to the bootloader program, which wakes up the computer’s operating system and loads it in the RAM. An example is Rockbox as a firmware replacement for portable media players. There are many homebrew projects for various devices, which often unlock general-purpose computing functionality in previously limited […]