Some times when I turn on my pc and get to windows vista, I notice that the hard drive indicator light never turns off. When it does that, each time I look, my phyisical sata dvd drive is gone from My Computer and I can't access it, even see it in Disk Management. I think its either from when I put everything into a new case, or I installed something with drivers that do this. But I am leaning toward something physical, although I don't know exactly what. I do know that when I put my drives into my new case, it was a VERY tight fit because of where my sata ports are located on my motherboard, which is a Biostar T-Power I45. If anyone could help me with this problem I would appreciate it. Of course I can get the dvd drive back usually by re-booting but I would like to rid myself of the problem altogether.