Nero crash

PC is MSI K9N Platinum (MS 7250), Athlon 4200 dual, 1.0Gb DDR2 Corsair, Samsung SATAII 250Gb.
Machine is very stable, usually, with no other issues. Except. When burning with Nero (bundled with drive), the process gets to 16% burn, then just as the burner spins up, the machine shuts off. Even when set to blue screen, it just shuts off at 16%.
Ive upgraded all MSI drivers, updated BIOS, changed both DVDRW and Nero, set UDMA to 3 and 4 instead of Auto, but now im stuck. Any advise?

Nero has a log - can you post that?

There is no history in it. It just ends after the device info. Normally you see the recent burn history, but theres nothing there.

I seem to have solved it. Been tinkering with UDMA BIOS settings. Just done a quick burn with it set at UDMA0 instead of Auto, and the drive set to CD/DVD instead of Auto.
Ill reboot and try a few more, larger burns and post later.

OKies..