Though this is a decidedly last-generation system, I figure it still has at least a couple years of usable life. GPU's are 3x Gigabyte R9 280xOC rev2.I have a PC with an Asrock 970 Extreme3 (and AMD FX-8350) that I'm repurposing, and along with a fresh install of Windows 10 I'm looking at upgrading the storage.

What can i do? possible to 'fix' the motherboard or anyone know if theres a easy fix for this? im desperate, pls help :( I cant return the motherboard anymore, because i have taken it in use already and will be impossible to get warranty to replace/fix the board, since i have tried to reproduce the problem with different kinds of stress testing programs, but none of them stress the GPU's as hard as scrypt mining does, also havent been able to find a test program that stresses multiple GPU's at the same time and i seriously doubt companies are running cgminer to test multiple GPU's these days :sadface What to do? Motherboard broken or working as intended? Someone on another site suggested that the PCI probably isn't getting enough power from the 24pin header on the motherboard and GPU's will throttle down to reduce power and prevent them from melting the 24 pin header and freezes the whole pc in the process requiring a manual reset. Dont know if it happens with just 1 gpu, ran a test with 1 GPU for 15hours no freeze, stopped that test.

This freezing happens if i run 2 or 3 GPU's, tried all kind of configurations, all on powered risers, 1 or 2 on riser etc. Im am 100% sure the problem in my rig is the motherboard, tested everysingle other piece of hardware on my other rig and they work perfectly.

Bought a new rig a week ago, been having problems from start, rig is freezing between 1minute to 12hours after mining starts.

Asrock 970 extreme3 driver update