Another CC problem

I finally fixed my controll problems for the game by changing bios, (i don't why it worked, but it did) and now after get the fairy girl in the hydra marshes, the game freezes up and the screen goes black, music keeps playing and all. It doesn't happen right away, i can sometimes walk around and get into a couple fights, but when i walk into a different area it freezes. i looked through the boards, and found this to be common problem. the solution is of course f7, but after bashing it till the game comes back, it exits espxe completly leaving me with just the dos window. Anyone seen this one before???