I got a couple of new MSI Vega 56 air blower OC cards (hynix) and getting random reboots in Windows even on desktop with zero (10W) load
IN Windows you get no warning or error just a powerlos restart type of thing
happens on 2 PC systems with each 800W power supply
no OC/UV just default settings & bios
Have this issue with 2 Pcs came from GTX 1080 and Asus Vega 64 (Samsung) without issue