Playstation Disc help

I downloaded Disc 1 of both FF7 and FF9 a while back, alongside Spyro 2, and there were some graphics problems. For FF7 & 9, the battle menus don't show up,and the effect when you go into battle is just a black screen. In Spyro 2, most of the characters and voicing were messed up badly. Can you guys fix it? thanks.