Hi, In those cases, my first bet is a memtest to check the RAM and CPU.

@Bastien-Nollet another interrupted today. I'll add one second by one second till I see it disappear. just modified to 2s delay.

@Andrew I thought dom0 had to have some sort of graphics card; is this a recent development? My understanding is that dom0 needed one, albeit not necessarily any with GPU capabilities. Thanks in advance for any clarifications.