"Insert blank media" error

I’m using a NEC ND-5100A burner and attempting to burn a DVD. All the set-up seems to work but when I try to proceed with the burning it gives the error that it cannot detect blank media in the drive. I’ve tried using Memorex DVD-Rs and Imation DVD-R…same problem with each, it cannot recognize the blank disks as recordable media. Am I using the wrong type of disk?

The ND-5100A is a DVD+R burner and will not work with DVD-R media. It is possible to upgrade to the firmware to a 5500A which will make it a +/- burner. Please note upgrading the firmware is not a beginner task. If you do so, it will likely void any warranty you have.