The problem is not with a floppy in the drive. There is a BIOS ROM checksum error. After that message, I get "system halt". Doesn't boot far enough to recognize HDs or FD. So I can't get into CMOS or BIOS setup.
try holding down ctrl or del from when you turn on the pc. hold it down until you get that screen and see if anything changes. i think that was able to revert bad bios flashes on some older pc's. try resetting the CMOS. if all else fails you will have to do a "hot flash" or buy a new bios chip