Thanks but the only thing listed under IDE ATA/ATAPI controllers are Standard SATA ACHI controllerMaybe this might help
https://www.tenforums.com/drivers-hardware/24583-dvd-cd-rom-not-device-manager.html
"A fix that has worked for many people is to go in Device Manager and under "IDE ATA/Atapi controllers", delete both the channel 0 and channel 1 entries by uninstalling them. Then reboot the computer. The 2 things will be reinstalled and then your drive may show up."
Got from here
https://forums.tomshardware.com/thr...ecognize-usb-dvd-drive.3682268/#post-22176426
I'd suggest trying with 2nd external DVD player, preferably different brand. Could be that the LG one has some fit with OP's desktop. If 2nd, different brand, external DVD doesn't work either, then it would point towards MoBo issue.