Are there any other devices on that chain? If so are they also master? Is there an optical drive on the chain?
When did your floppy drive stop working? Does it light up? Does the light stay solid on? Does it blink at all during post? Is the power connected to the floppy drive?
Have you reseated the ribbon cables (both IDE 0 and 1 as well as the fdd cable).
Does the hard drive support CS or Cable Select? Have you tried that option?
Ok, so I got my brothers "old" PC, it is a custom Cyberpower systems tower computer. I started using it and it was working very well. Before I got the computer was having some troubles with booting and not recognizing hardware. But for me it was working fine. Today it did not recognize the floppy drive, no matter, I don't use the floppy drive. But it wouldn't boot. I only have a slave drive in the pc. So I set the slave drive to a master, still wouldn't boot. But it always was a slave, why doesn't it want to boot now? Tried everything I could think of. Still wont load up windows. Please help and give me suggestions to what I could do to fix my computer.