Sony DRU-710a

Has ne one ever seen a this

After a complete burn either with Nero (v6 or 7) or Windows built-in burner when the cd/dvd ejects it the retracts over and over until I rebbot my computer. Have recently tried upgradeing the firmware but that did no fix it. I removed the drive and put it another computer that was freahly formated, but after installing windows/ nero and trying it still does it. ne suggestions