New asus p4s333 won`t let me get to dos mode.

I have a p4.533fsb processor that I`m trying to use on this board. I can`t get out of post with a error message that there is no floppy drive. Also my cpu fan is not working. Is it possible that updating the bios would fix these issuses? I tried a different floppy drive and new ribbon but neither helped. How can I update bios if I can`t get into dos?
 
if the cpu fan is not working. get out of the computer and get that fixed or the processor will be had quick!
 
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