I'm having problems installing Windows 7 Pro 64 bit on a Dell Precision T5810. The installation DVD that I'm using has worked fine on Dell 790s, 7010s, E6430s, etc. On the Precision T5810, my install disk can not find the DVD driver upon which the disk is located. I have set the BIOS to install via Legacy. I set the DVD in the 2nd boot position. I had tried to do a UEFI install, but the same problem occurred. I would appreciate help and direction from any other users. Thank you.