Invalid System Disk, Press Any Key To Continue

[Sinister7]

Ok I got some major problems here!...
I have an old Pentium II 466 (66) with around 350 MEg+ of SDRAM PC-100
2 HDD- IBM 2.5 Gig (MAIN) <---------- TROUBLES!!!
Maxtor 20 Gig (Second) <------- Backed up data, Cant Format
With an a: that doesnt seem to like my startup disks.
What I did was I had 98SE on the computer before then i formatted it because i need an updated version of windows for the LAN drivers to work.
So anyways i went into the Command promt in DOS when i restarted and i typed Format C:
BAM done format.
Then I went to put a floppy disk thats a startup disk and I keep getting Invalid System Disk. I cannot get past this screen or into a prompt (Obviously) And i have tried many different startup disks all which i have tried on other pcs and seem to work fine. I checked the cables and they seem to be setup fine (NO SOLID LIGHT, NO FLOPPY FAIL) and i even checked my BIOS for boot sequence and of course its
A:,SCSI,C:
STILL NOTHING!!! I need some HELP FAST!!! need to get this computer done and done with!

[jtdoom]

hi

check BIOS for setting of floppy mode.
it has to be standard 1.44, not mode three

is the IBM a SCSI drive? I guess not
A: , C:, would be more appropriate

you could also try CDROM, A:, C: