Computer freezes during startup

My computer freezes on the COMPAQ screen right after I turn it on. I was trying to re-enstall windows 2000 professional and when it went to reboot, it frozed. I can press F10 and I go to ROM PCI/ISA BIOS CMOS setup utility screen but I do not know what values to put in there. Please help! Any help is greatly appreciated.

Thanks in advance!