My Dad has a Dell desktop computer with a TSST corp DVD+-RW drive. He wants to copy a video clip from his computer to a DVD. He has some SONY DVD+R 4.7 GB/120 min 1X to 16X compatible recordable DVDs, but when he puts a blank DVD in the drive, it doesn't seem to know it's there. In Windows, if you right click and try to open the DVD, you get a message to insert a disk into the drive. In Roxio, it lets him get as far as trying to format, then says the device is busy. I tried having him put the disk in the other way up (well, you never know), but no, he had it right in the first place; we also tried with a different disk from the same pack and got the same result. The drive plays both audio CDs and video DVDs with no problems, and under troubleshooting it claims to be working properly.Has he got the wrong type of disk, perhaps?