digital camera card reader problem

it seems that ME does not want to recognize my digital camera card reader. i
have and amd processor, 256 ram. when i plug in the usb it does recognize
that, but it asks me to insert a card into the slot, which i have done, both
before and after it has asked me to do that and i get the same message. 'put
a card into the slot'
any fixes out there that anyone knows about. i am thinking that i may have
to bite the bullet and get an intel in place of it.