The Customer reported not being able to use the cd drive on this all in one desktop. This usually doesn't present a problem since Windows can be loaded and installed on a USB flash drive. The program I use is 'Win to Flash' and takes about 10- 15 min to transfer from disk to USB. Unfortunately this a2010 Dell XPS does not have an available option in the BIOS to Boot from any kind of external device. The options are- hard drive, disk, or network. There is way to load the OS on the hard disk and install from there, I just haven't need to learn it yet. I decided to open the back and bypass the cd drive myself. This model looks impenetrable without a trace of a screw until you take a real good look underneath the screen. There's a screw on both sides that's completely camouflage. With those 2 out the back cover slides up.