Have you just upgraded the ROMS? If you have tell us what version kickstart ROMs you have fitted.
I believe the A3000 version, should be 40.55!
Use the early boot menu to disable all HDD and boot from DF0: with NO floppy disk in the drive. You should get the kickstart screen. The version number will be on the purple screen.
The A3000 kick roms are kind of unique, ROMS from other machines 1200/4000/etc don't work. The A3000 requires some special bonus code attached to the ROM.
