When does grub print 'GRUB'

[Brad Crotchett]

I have a server that won't boot.  After the BIOS, the word 'GRUB'
appears on the screen and that's it, it halts.  I assume this is still
stage 1, but I can't find any information on when this is printed to the
screen and what may cause the system to halt.

Thanks in advance,
Brad