I decided to try this on my M4400 and it still works. I just wish that you could add animated logos somehow. Not sure what happens on EFI bios. All regular bios laptops should be supported. Freedos from rufus on USB drive works since this has to be done from dos. mega.nz/#!o3gWxb6K!Da7UFORYla6xoxYW6w1u3WcWr_bg2YOpK5qjGG-EmQE