I've found several questions about this issue, yet not a single good answer. I am also having this problem - have dealt with it for two full days and it is very frustrating. I have been building, repairing my own computers since the 80's and am a programmer web developer, so while not a computer build guru, I'm not exactly a dummy either. Unable to clone due to system drive errors, I've decided to install onto a new drive from scratch, yet after eight different dvd drives - the last two brand new! - I still get this message - a required cd/dvd drive device driver is missing. Windows boots up from the drive just fine, and gives the menu options, but after choosing to install, I get this message. Why would it need a driver for a drive it just booted up from? And what the $#^^Y can I do about it???