|That's the message you get when there is no disk being detected in the drive. Of course, there must be a disk in the drive when you click on it's drive letter.|
If you have more than one optical (CD or DVD) drive, of course, make sure you're clicking on the drive letter for a drive that has a disk in it.
CD-rom (only) or CD "burner" (only) optical drives cannot recognize DVDs of any type.
If you replaced a drive that wasn't working, if you disconnected the drive that wasn't working and booted the computer at least once with it disconnected, the new drive may not have the same drive letter assigned to it that the old drive did.
The drive letter assigned to the drive can be changed in Disk Management.
Check your SATA data cables. The connector on each end should "latch" into the socket on the drive and on the mboard, or on the drive controller card - it should not move when you merely brush your hand against it near the socket - if it does, mere vibration can cause a poor connection of it - use another SATA data cable that does "latch", or tape the connector in place.
(There is a slight projection or bump on one side of the outside of the connector that "latches" it into the socket - it's easily broken off or damaged)
The same thing applies for the SATA power connection.
All optical drives are somewhat or very fussy about which media - types and brands of disks - work in them properly.
The last time I looked the only brand of all types of burnable disks LG recommends to use in their drives is Verbatim (in North America - it's known as another brand elsewhere) . For individual types of burnable disks, LG lists several brands.
A "factory" read only disk that already has data on it should be recognized fine.
A CD-R or DVD-R of almost any brand should work fine, but other types of burnable disk brands may not.
"Bulk" LG drives I have bought (merely the drive in a anti-static bag, usually with a free burning software version, etc., on a CD or DVD) often came with a sheet that specifies the media LG recommends.