NF7-S v1.2 Help Please

Hi All,
Got my NF7-S v1.2 back from Abit and boots into bios nice, set up bios but I am unable to boot to from floopy, hd-0 or cd-rom. All I get is flashing curser. I tried hd that was in when original died.
I've tried 3 pci video cards, 2 used hd's, 1 new hd, switched all pci and floopy cables. Got to be something simple but I'm missing it. System specs as follows:
400 watt Channel Well PS
NF7-S w/ 2100+ all set to default
1 and 2 PC3200 Twinmoss w/ Winbond BH-5 relaxed
Pci video card.
Thanks in advance.......goldie

Is your floppy lit all the time when you try to boot?

Are all your drive jumpers set correctly?

Try resetting to fail safe settings in BIOS.