1) In BIOS is the drive listed in the boot priority list? If so is there an option of something like: Plug and Play OS
2) Check to see if the graphics card isn't damaged.
3) It could be a IRQ conflict, make sure that the drive is not sharing the same channel with another device.
Hit me up if you have any questions on my reply
I have a new ASUS X73E 17.3-inch Laptop (intel Core i3 2350 2.3GHz) with Windows 7 64bit, everything seemed to work fine after first switch on, but after the first day and after loading some software such as DAZ Studio10, FL Studio 4.5, and some others all from downloads from Web, the internal DVD RAM GT51N is always disabled at switch on and have to enable it , have tried Update Driver and Uninstall in the Device Manager + reboot, but the same problem happens, its starting to get very annoying, but at least it works when enabled, please can anyone help.