I have a GGC-H20L blu-ray ROM (HP version, firmware 1.07) and it behaves really strangely. It cannot read any CD, DVD, or BD discs in Windows Explorer (I use XP Pro), but it can play BD discs in PowerDVD 10. I'm fairly certain it isn't supposed to do that because it is a DVD burner as well as a BD-ROM. It's really strange that it can play a BD but not allow me to see the files on it. Any suggestions? The drive isn't under warranty.