What if the optical drive disappears?

My notebook computer optical drive letter when suddenly disappeared, check the system CMOS but no problem, please dong Master help!

Considering that your notebook is new, and the optical drive in the CMOS is there, the optical drive itself hardware failure can be ruled out, may be because you installed a virtual CD-ROM and other optical drive software and uninstall caused. Dong Master to give you a recruit, turn on "control Panel → system → Device Manager → hard disk controller", and then click "Delete", the computer will require a reboot, and automatically install the driver, once again after the computer started "lost" the CD-ROM drive found. Oh, this crooked trick is guaranteed to work.