Mine goes "Hurry the f*ck up, geez."However, you're always welcome to make your own noises when it's booting up.
"Woosh! KaTang! Blammo! Kapow! ...OOOPPEENN-PANDOOORRRAA!!!" - Though you'll probably get some strange looks for that last one.
Like blue and yellow horizontal stripes flashing around the border accompanied by high pitched modem squeals?
That sounds familiar...
See the boot sounds thread in cool ideas on the other forum. Chris_c gives a guide. http://www.gp32x.de/board/index.php?/topic/58505-boot-sound/