I've had this problem in the past. Not sure if I remember how I resolved it. If your DVD drive bay is extractable, physically extract using the icons in your taskbar (bottom right of your screen). Then fit it back in. Then ensure the bay is locked. There should be a slide lock somewhere. Try this, hopefully it helps.
I've had this problem in the past. Not sure if I remember how I resolved it. If your DVD drive bay is extractable, physically extract using the icons in your taskbar (bottom right of your screen). Then fit it back in. Then ensure the bay is locked. There should be a slide lock somewhere. Try this, hopefully it helps.