I have two memory cards: a mad catz and some unnamed blank black memory card. My playstation recognizes the cards until I put in a game. I start the game and they all say "no memory card found. do you want to continue?" please tell me what's going on here. There's really no point in playing the thing if I can't save anything.

I thought that maybe the memory cards were full so I went into the blank black card and deleted all of the saved games (it was full). Still wouldn't work when I started a game. The mad catz was already empty.

Is this a problem with the PS2 or the cards??

PS2 - Dynasty Warriors 5, but it's doing this to all of my games (all PS2)

I don't think it's a sony card. There is absolutely nothing written on it. A friend is bringing me a sony card so we'll see. Thanks alot for your help.