I purchased a NEC DVD burner (SATA) it would only burn DVDs at Max speed, I returned it thinking it was a bad drive. I then bought a SONY DVD burner (SATA) and it will only burn at Max speed (same problem). If I try to change speed to a slower burn speed, it gets ejected and an error pops up. I have used two different burning software, one will only burn about 1% on the disc then ejects the other will not even try before it ejects disc. Any ideas?