You didn't indicate exactly how you fdisk and formatted. I am just guessing that you formatted from the C: drive. But regardless, once you format, you no longer have a bootable disk drive unless you specifically did a format /s.
You should be able to:
1) Go into BIOS and check to make sure it is set to boot from A: first and C: second.
2) Boot from a system disk on drive A:
3) fdisk the C: drive and make sure the primary disk partition is the "active" partition.
4) You might want to format it again once you exist fdisk. Use "format C: /s" to transfer the system files over to it.
5) Eject the floppy from the drive and reboot. It should try to boot from the floppy and then try the C: drive next and it should get you to a C: prompt.
6) Depending on your configuration, it might allow you to access your CD ROM. If not, you will need to find the setup routine/floppies for it and install the driver so you can use the CD ROM to install windows.