I Have a Targa DRH-5300x

Question

I Have a Targa DRH-5300x It take a full minute to load a DVD R disk for recording (HP dvd r 8x 120mins), and if I Put a DVD-R disk in the drive it looks at it for a while and then ejects itHowever if I copy a dvd on this media (Verbatim dvd-r 16x 120 mins) and insert it it plays OK!Any help for this problem ie: firmware updates etcRegards Danny