I have XP home (SP1) on a Athlon 1.1, ECS K7VZA MoBo (Via chipset with latest drivers) and 1gb RAM. I've just got a Pioneer DVD-R model R105 to back up my DVD collection and during the burn phase (latest version of Nero) the machine mysteriously restarts - no blue screen, no app crash just a restart. The restart varies between about 20% of the way thru the burn and 95% - any ideas would be gratefully accepted.