I've been having nearly the same issue. But I have to add it only happens with NERO. I use Shrink DVD and Alcohol 120 as well as DVD43 abnd many other programs with no problems at all. I have swapped memory all of which are good. Swapped even the CPU and still same problem. One thing that has changed in my system is that I upgraded my video card from an ATI X800 Pro to an X 850 XT PE and do not recall having problems prior to this.. My DVD burner is NEC 3500 AG and am thinking of swapping it to see if it may be part of the problem. I really believe it is NERO speciofic, No other progrma causes this crash.. By the way no blue screen when it crashes just a restart for me... I do have NAV and ZAPro running. If I disable ether... same problem. I happens in Nero Burn, Nero showtime....Nero Smart start will get me going bui the moment the DVD player needs to be accessed. BOOM. Restart.