RX 480 CrossFire red screen hang autoreboot

Discussion created by hardmallet on Apr 28, 2017

GPU: MSI RX 480 8GB GX and MSI RX 480 4GB GX

PSU: Seasonic P-660

RAM: 4x4GB HyperX Fury DDR3

MoBo: Asus B85-PRO GAMER

CPU: Intel Core i5 4460

OS: Windows 10 64-bit

Monitor: Acer G237HL

Driver: 17.4.3


I can play Tomb Raider 2013 on 1 card before and after I bought the 2nd card. I can open the main menu with CF on in Tomb Raider no problem, but when I start the game/benchmark it hangs and the red screen shows up and auto-reboots. 1 card can run the game 1080p ultra 100fps,but I want to try to get CF running cause I'm saving up for an MG279Q, and hopefully  I can have it running by then.


Short question is, is this driver related? I double checked power connections, tempts and my PC seems to detect the 2nd card. I have CF enabled and the CF logo shows up opening Tomb Raider. I just can't get it to run. I don't know what to do at this point except hope it's driver related.