Thank you both.
I am still trying to trouble shot the problem and the burner is in use at the moment. DVD decryptor gave an error about power?
I 13:59:36 DVD Decrypter Version 22.214.171.124 started!
I 13:59:36 Microsoft Windows XP Home Edition (5.1, Build 2600 : Service Pack 2)
I 13:59:36 Initialising SPTI...
I 13:59:36 Searching for SCSI / ATAPI devices...
I 13:59:36 Found 1 DVD+RW!
I 14:01:05 Operation Started!
I 14:01:05 Source File: C:\mybackup.ISO
I 14:01:05 Source File Sectors: 2,285,865 (MODE1/2048)
I 14:01:05 Source File Size: 4,681,451,520 bytes
I 14:01:05 Source File Implementation Identifier: DVD Shrink
I 14:01:05 Destination Device: [1:0:0] _NEC DVD+RW ND-6100A 104D (D:) (ATA)
I 14:01:05 Destination Media Type: DVD+R (Speeds: 2.4x, 4x, 6x)
I 14:01:05 Destination Media Sectors: 2,295,104
I 14:01:05 Write Mode: DVD
I 14:01:05 Write Type: SAO
I 14:01:05 Write Speed: 8x
I 14:01:05 Link Size: Auto
I 14:01:05 Test Mode: No
I 14:01:05 BURN-Proof: Enabled
I 14:01:05 Filling Buffer...
I 14:01:06 Writing LeadIn...
W 14:01:17 Failed to Write Sectors 0 - 31 - Power Calibration Area Error
W 14:01:17 Retrying (1 of 20)...
W 14:01:24 Retry Failed - Power Calibration Area Error
W 14:01:24 Retrying (2 of 20)...
W 14:01:33 Retry Failed - Power Calibration Area Error
I have also tried my DVD burner and it failed with a power message if I recall correctely. I was wondering if the laser power intensity changes so that it can't write ( which I assume requires more flux) but can still read. The scientist in me ...
Thanks again for help/advice. I will post error messages from other programs if I don't get anywhere.
prior to the dvd writing error, I was using Nero to backup my drive to a removable drive, ..?