Operating sys is noted in left hand margin
Sorry, but I cannot assume that is the same computer. Many people have several computers, all with different this or different that, or they may be posting about some other computer they are working with, like Dear Ol' Mom's.
Since you have another computer available, I think I would try to install Windows using those floppies to one of those drives on it , just to see if the installation will complete through the entire 6 floppy set. Floppies, like all magnetic medium, do go bad. If that works, Install the Recovery Console
to that disk, move it to the original PC. Upon first boot, watch the screen and follow the prompt to enter the Recovery Console. Cross fingers and hope a repair will reset that Windows installation to that computer's hardware.
Of course, if the installation fails using those floppies on your hard drive in a different "host" computer, then you have bad floppies.
Biostar has produced 100s of motherboards over many years for both AMD and Intel processors of all architectures. Knowing the motherboard model number tells us the type RAM (DDR, DDR2, DDR3), brand and type/class CPU, type drives (SATA or EIDE). It also allows us to read your manuals, and learn something about the age of the hardware (not that XP on floppies is not a clue!
How much RAM is installed? Have you tried NTFS instead of FAT32?
Do you know this to be a good motherboard/computer otherwise? Have you tested the RAM? You might try installing Linux on it, just to see if it will install and run with no issues.