Press and hold the two most right soft keys while powering up. This puts you into Boot Mode. Try formating the card there. If that fails then go to synchrotech and buy a card there. not all ATA Compact Flash Cards are treated equal.
FMJ Compact Flash Card
Industrial LG Series
PCMCIA PC Cards and PC CardBus Cards Home Page
CFV-512MB-TSI-3522 ........ $28.00
CFV-256MB-TSI-3522 ........ $25.00
CFV-128MB-TSI-3522 ........ $22.00
Compact Flash Adapters (These work with the above cards) $9.50
ADP-CF1-PC
PCMCIA PC Cards and PC CardBus Cards Home Page