I am having trouble with my cdr/rw. It is an acer brand burner, not sure of the model. it will not read any cd's I put in. I had been making cd's of my old vinyl records. But now it has quit. I have not changed anything in my hard drive. I thought the burner was bad so I went and purchased a new one(sony DRU810A) my computer will not recognize it at all and freezes when I try to run anything. So I put back the original burner. It worked one time and has quit again...Any suggestions?