I recently purchased a Lite-On cd-rw burner. I followed directions on installing and it will not work.The green light on the drive comes on and stays. Then about 3 seconds later, the monitor goes on stanby. This is the second one I have purchased. The other did the same and I sent it back. Am I doing something wrong or have I just received TWO lemons. Please help me fix this problem. My computer has a lot of things on it that I really don't won't to lose and this was to be my means of saving it on disc.