A shutdown is caused by a safety being tripped. What happens when you run Prime95 or Furmark?
Did you ever figure out a solution to this. I am experiencing the issue when playing PUBG. While playing the match, randomly during the match the entire computer will shut off. Afterwards, pressing the power button will not turn the computer back on. I have to flip the switch on the back of the PSU off and on to get the computer to restart.
I currently have the following test system:
GPU: RX Vega 64
CPU: Ryzen 1800X
Mobo: MSI X370 XPOWER Gaming Titanium (latest bios)
RAM: 16gb 2933mhz
PSU: Seasonic Prime Titanium 1000W
I'm thinking of getting a 1200 or even 1500 watt PSU for RX Vega 64 since this never was happening when using the old R9 Fury. Playing PUBG at 1440p 144Hz freesync I see power consumption over 600 watts from the wall measuring with a Kill-A-Watt from Fry's. Maybe the Seasonic cannot handle the load spikes but I doubt they go over 800 watts so a 1000w should be sufficient.
Ever figure this out? I have 2 Vega 64 I sent for RMA's that had the same issue. Received one back ( a different card different model ) worked fine for a couple weeks and now it's shutting down the PC again while gaming. Sometimes even at the main menu. Tried 3 power supplies 2 corsair 1200 and one 1000 pretty sure it's not the PSU or any other components either because i ended up building another rig but it still powers off the PC. Changed the GPU to a RX 580 and it works great.
the 2 vega cards were sapphire one air cooled and one water cooled. The one i received from the RMA was a Nitro Sapphire all different models same issue.
Yes, I resolved the issue by switching to a new Corsair HX1200 PSU.
After a lot of time looking for an answer i came across a forum that pointed the multi-rail amperage limit. As soon as i switched to single rail mode in the PSU(1200) it stopped shutting down, I could game for hours no problem. Before sometimes it wouldn't even go past the main menu in games. So this Vega cards have crazy high spikes that forces the PSU to turn off in multi rail mode just because it can't handle the amp spikes. Now the question is. Are the cards faulty or is it a driver issue? I want to say it's a driver issue just because it happened to three cards different models but at the same time they were all sapphire cards so it could be a manufacturers bad batch.