So I have a NEC DVD Burner and a SONY regular CD drive. First thing is the NEC DVD Burner. I just built the computer and like before windows starts up this drive works and opens and everything. But when right now as im typing this, I press the button and it does nothing. And the regular Sony drive has been working the whole time untill recently when I put a CD in to install something, there was no D Drive. Please Help!