Error in my 5D ii

[Asma]

Hello ,
One week ago , after my shoot when i connected my camera to my mac pro, there was no pictures showing , when i disconnected the camera, the screen was showing ( Error , card not formatted, format card with this camera ) and when i go to the menu and select format card , it shows ( cannot format, change card ) ! I tried my another card, there was the same problem .. Beside i cant shoot any thing, its like the camera its not working ! Can someone help me

[ezpop]

It's probably the CF card assembly part became defective.

http://www.dpreview.com/forums/thread/3080558

Send it to Canon service to check it out.

[JonKline]

Definitely try a different card, too.

What type and size of card are you using?

[TCampbell]

Remove the CF card and visually inspect the CF spot.  Make sure you do not see any bent pins.  If you do, your camera will need service.