I'm having one of those "wits end" moments. I've just replaced my wholly dependable CD writer with an Emprex DRW10161M DVD+/- R/RW writer. I still have my original Samsung SD-616T DVDRom. I have a 2.2 P4 running XP Pro with SP1, 512 meg of RAM. Both the DVD and the DVD writer play CDs, CDRoms and bought DVDs perfectly. They will also play data CDs recorded in the DRW10161M. No problem. But neither will do anything with DVDs I record. Not even the burner. I've recorded about 10 data DVDs using DVD-R (unbranded) and another using a DVD+R (which I know my Samsung won't read now - according to Nero). I can see they have been burned, but when I try and open the disk on exploring my burner drive, it shows an empty directory, but that the disk is full. If I try and put one of the burned DVD-Rs in my DVDRom, it just whirrs indefinitely and I can't check for properties. I have tried burning in Instant CD/DVD and went out and bought Nero 6 yesterday (somehow thinking that would cure my problem). It didn't. So I've been merrily burning DVD's which my drives won't read. Everything else seems fine, so is this likely to be an XP problem rather than a problem with either drive?