You are correct... and when I looked for how to enter the BIOS on your Flinstone era machine (which they refer to as "computer setup") this was the closest thing I could find.That is 1700, not 1500 series
When you wrote that you could not access the BIOS, this simply told me that you don't know how. Maybe you've never read any doc's on the subject, or maybe the screen warms up so slow that you never saw the option?
In any case, you should have started a separate thread on this entire subject, and started that thread by revealing all the details of the hardware you're dealing with, and what your final goal is, instead of asking about Win9X disks being bootable.
You're Welcome.