I'm trying to do my third form of backup for the week which is burning essential data to DVDs. Well, I just recently ran low on my normal GQ branded DVDs and they were out of stock at Frys so I picked up some HP branded DVDs instead figuring that they would be good quality. And now when I put the DVD into the SuperDrive is tries to read it for about a minute and then ejects it. I've tried 4 different DVDs so far and they all yield the same result from my MacBook Pro. I just burnt my last 2 GQ branded disks before this and they burnt perfectly and did not have this problem. Why won't it burn the disks?