System powers off after selecting boot option

[Aaron Job Andrus]

I'm trying to install 6.0 64bit on my Compaq Presario
R3000 (AMD Athlon 64 3400+). When I boot to the disk1
cd I get to the boot menu where I am presented with
the options to boot default, no acpi, safemode, single
user mode etc. However, no matter which boot option I
choose my laptop powers off after a few seconds of
churning (/-\-/). I can "escape to the boot console".
Are there any special variables I need to set in order
to proceed from the boot console?

Thanks,

Aaron