I Use 2 MSI R9 280 Gaming 3G Cards in Crossfire on a ASRock z97 Extreme 3 Mainboard.
Powersupply with 750 Watt Corsair RM 750i.
Crossfire works well with and in Games.
Win 10 pro
The Problem is if I shut Down the Computer an Crossfire is still on I get a Boot Problem. It starts booting and Stops after a few seconds.
When I Reset it starts and boots into windows.
When i restart windwows it hungs in the Restarting Screen.
I have to reset then.
When Crossfire ist off everything boots well.
This problem occured from the beginning.
I Allrwady changed the Motherboard for a Gigabyte z97P-D3. It was the same Problem.
Can sombodey help?