I would first make sure Windows is recognizing that you have a drive connected. Make sure it shows up as a drive letter in File Explorer/Windows Explorer. If Windows detects the drive, make sure it actually is a burner and not just a ROM drive. Have you written to this drive before in DVD43, if it writes to optical disc?
Are there no drives detected at all when you start ImgBurn? Check the log window and see if ImgBurn detects anything. Maybe it's only detecting a ROM drive, even though the drive may be a burner. Go into Read mode and see if ImgBurn recognizes a read only drive.
Open ImgBurn and without doing anything else, copy and paste the log from the log Window of what ImgBurn generates on start. That might help us some more.
I'd be more likely to first make sure the drive is actually a writer and not a ROM drive.
Also check under Device Manager and make sure there are no error messages that might indicate a problem with the drive. And check to make sure some writer is detected.
If Windows detects a writer, try writing files to it in File Explorer/Windows Explorer. Make sure it actually works under Windows and that it's just ImgBurn not detecting it.
If Windows does detect it, you could try any of the other interface driver options (I'm not too familiar with those.) in ImgBurn and see if you can coax ImgBurn into finding a writer.
Beyond that, maybe LUK can offer more help than I.