Kodak C330 digital camera won't recognize any memory cards

My Kodak C330 digital camera no longer recognizes the memory cards I insert into it. The problem began when it stopped recognizing a 128MB card that used to work perfectly with the camera. I tried formatting the card, but the problem persisted. I tried buying and inserting new SD cards, always Kodak brand, and always formatting them, but the camera doesn't recognize any of them. I realize that this camera is too old to accept 2GB cards, so I haven't tried those. The largest memory card I've used is 512MB.