OpenGL not loading / new Memory

I was wondering if anyone might know why i’m having problems. here’s the break down… i just got a new 512 PC2700 DDR crucial memory offline and i replaced my old memory that was a bit faulty, really the only difference between the two chips was the bus speed and now my game have trouble with the openGL. the games are Retrun to Castle WolfenStein and Jedi Knight Outcast. Please help if you know.