I'm writing this just to let you know that if you use EE Cycle Rate above the default settings, that you will see no text in the bios.
I only tested the overclock (to the right).
Edit: just tested underclock and it's fine. So only the overclocks do it.
Interesting, I can confirm.
I saw this long ago but I didn't bother posting it(over/underclocked is not how the PS2 work so problem can be expected)