HP ESXi 5.0 does not boot until key press

Hi guys,

I wonder if anyone could shed some light on this for me.

I have a HP ProLiant DL385 G7, with HP bundled ESXi 5.0 install onto its internal SD card. However when it gets to the boot stage, it gets stuck on the boot loader until I press the enter key. So it says:

SYSLINUX 3.86 EBIOS Copyright (C) 199402010 H. Peter Anvin et al

boot:

Typically with previous ESXi and other linux it waits 3-5 seconds and it starts the boot up process. But with this system it just waits indefinitely until I press the return key manually. Is this a bug or does this indicate some other problems with my setup?

I presume I can boot with another linux distro and fix it using grub. However I don't know enough to know the actual steps. If someone could provide some instructions or references that would also be helpful.

Thanks a lot