Under DMA, it reports that:
Channel 4 Direct Memory Access control is OK
Under Problem Devices it lists my LAN and Wireless PN15 adapters as I have them disabled. Nothing else is listed.
I can't set the BIOS to only allow DMA. I tried to disable PIO mode, but there isn't an option to do that.
I've removed the controllers and let Windows re-install it.
I've used Shuttle's own drivers, nForce4 drivers 5.10 and 6.39.
I've un-installed Pinnacle Studio 9 ( just in case ).
I've un-installed Nero using NeroClean and re-installed.
A low speed simulation fails at the end of the write ( cannot complete disc-at-once ).
I don't have access to another DVD writer to test if the writer is at fault and as the first of the two files will write, I'm assuming it's not the cables, but I can change it.
Next is a full re-format and re-install of XP