Thunderbolt is a powerful, reliable technology that gets brought to its knees by *checks desk* an USB cable in proximity to the Thunderbolt connector, apparently this is after I had to wrap the entire Thunderbolt corner of the motherboard in aluminium foil, that is
Louis Rossmann doesn't seem to know why the Thunderbolt failure depicted in this video happens, but apparently he's seen a lot of them: https://www.youtube.com/watch?v=KV_WfuIlAmo … (Zorched Thunderbolt power supply chip on Mac laptop. Maybe they need a fuse somewhere.)