I have recently just built a new computer I have a gigabyte Z170 ultra motherboard and I'm confident everything is installed correctly in terms of hardware but I know need to install a OS so i recently bought a Windows 7profesional disc and received a dell reinstallation disc which I was assured would work on a new build but my dvd drive dosent work with it. It tries to read the disc for a good 30 seconds but I'm still stuck on the insert boot media screen. I have tried the disc in my laptop and it loaded fine so the disc isn't damaged in any way. Meanwhile my dvd drive is a good 3 years old now so I'm just checking to clarify wether or not there could be any other problems that may cause this, it's also worth noting that the DVD drive is on boot priority in the bios. Also what would the easiest and most cost effective way of getting around this be ??