HP 6715B Laptops

All,

I've been having issues with HP 6715b laptops. They seem to want to cut off
about every 8 or 9 minutes and never finish imaging. I've not been able to
find the exact magic dance to keep them on :-) Sometimes eventually after 3
or 4 times of rebooting they just decide to stay on. I've tried looking in
BIOS for power management disable but don't even see Power mangement as an
option. Anybody have any ideas? It is doing it on all the same model about
18 so far.

Thanks,

Jeremy