DVD-ROM problem

My disc drive has stopped reading DVD-ROM discs.
It will read and play: DVD's & CD's, and I had no problem installing FS9 & FSX.
When I try to install a game or app from a DVD-ROM my computer acts as if there is nothing in the drive.
It will read and play: DVD's & CD's, and I had no problem installing FS9 & FSX.
When I try to install a game or app from a DVD-ROM my computer acts as if there is nothing in the drive.