Don't know for sure, but it seems to be a softwarefailure> re install to be sure.
Why? As a routine of a burnprocess laser has to be calibrated on certain area of your individuel CDR.
When this proces fails, burning stops with a failure message. But your burner goes on, but laser is then switched off>seems to be in the testfase.
But anyhow, when he still refuse to burn after re-installing software your burner need to be send back, cause of a defect.