Camera will not recognize the card

Get a magnifying glass, and a good, small light. Open th memory bay door. Look for the pin that's bent, or shoved back a lot furthe than the others(with CF, "a lot" is only a few millimeters). It is entirely possible that you attempted to insert the card in upsidedown? If you FORCE it when upsidedown, there are two pins that will bend(on opposite corners of the connector). There are polarized slots that are SUPPOSED to prevent this, but if the card or socket is worn, orif it's a split design, then sometimes the cards ca "seem" to go in, while actually bending pins, or shoving the indexing pins(1 and 50 I believe) back through the connector body, as thy are a bit longer that the other pins. If you can get the shell of the camera apart, those pis CAN be straightened... They'll never be 100% again, as the bend weakens them, and next time they'll bend easier. This usually happens with poorly designed, or worn card socket. If you can straighten it without breaking the pin(SLOWLY and only once is the key. no back and forth) then, I'd suggest backing the entire pin area with a few drops of hot glue. this will minimize the chance of the pin being pushed back in the socket. If it bend to the side, and got flattened to the back of the socket, you can TRY to straighten... I've had 3-4 successes. If it breaks, you're n wrseoff than you are now. And, if you know a talented solder iron expert, a snapped pin CAN be fixed. It's not easy, and I advise tipping well... but it can be done.

Ask for help from manufacture.