Hi,
It is somewhat common that a cd\dvd drive fails to show up after a upgrade to Win 8, 8.1, or 10... It is extremely unlikely that the drive is physically "Broken"...
There is simply a setting somewhere that had\has a glitch... The problem is that there are a number of different possible "Glitches"...
What fixes the problem for one person, may not fix the problem for someone else...
For Instance... Toshiba has one or two programs that are installed by Toshiba to Create Recovery Media... After a upgrade to a newer version of windows, these programs cause the cd\dvd drives to not appear, and need to be uninstalled..
They are somehow locked in to the old version...
This effects no one else... just Toshiba... However, there are similar issues everywhere...
It makes it much easier to troubleshoot with adequate information... Like does the drive appear in Device Manager ?
Does it appear in ThisPC ?
Depending where it does not appear, somewhat dictates what to look for...
Running a regedit to add a CD\DVD drive doesn't help much if the drive is already in Device Manager... If it is in Device Manager, but not ThisPC, that is a entirely different problem..
Then there is the issue of iTunes... because of some of iTunes burning features, it can cause a cd\dvd drive to not function after a upgrade...