Crossfire Freezes whole pc, help me please ;_;

Hardware Hub GPU
1

This problem has been going on for more than a year now i have searched countless sites and forums i have tried a million different things but no solution could be found.
the problem is that whenever have crossfire enabled and i run a game with crossfire(i am aware that crossfire does not activate in borderless or windowed) it freezes my whole pc and there is nothing to get out of it, everything just freezes cursor, keyboard input, music, browser, windows EVERYTHING no exception all i can do is force shutdown my pc with the power button.
Ihave no clue what is the problem here are some things i tried:

I tested every individual stick of memory.

I swapped the gpu's no difference.

I tested both gpu's separately the work fine only in crossfire do they give problems.

I checked the power supply

I under clocked both cards(i also tested with 100% fan speed they stayed a cool 60 C)

I under clocked my cpu(and overclocked) no idea how that would affect it maybe drivers ¿?.

I did a vram test(all okay no errors)

I did a normal stress test on both gpu's and my cpu at the same time(ran fine)

I did opencl benchmark using all gpu's and cpu's(ran fine)

I switched to multiple different clean installs of windows 8, 8.1,10, and now i have 10 Insider.(no difference)

I disabled ULPS

I reset the registry edit i did (scroll further)

I googled for days (yet no similar problems with solution)

Specs:
fx-6300 cpu
2x sapphire dual x 285 in crossfire
asrock 970 Extreme r2.0 (latest bios)
60 gig kingston ssd(windows 10 pro insider)
2 TB seagate barracuda(for steam and other programs)
16 GB Crucial ram
750 watt coolermaster powersupply
note: i did edit the register so that it would install programs on the D: drive by default instead of the C: drive

Please help me ;_;

2

This motherboard is notorious for crashing with CrossfireX. A quick google search brings up posts from multiple forums in the last 3 years all describing this exact issue with this exact board, all different AMD GPUs (Even back to the 6850).

Update to a 990FX board or a better 970 and it should solve your problems.

3

Thank you for figuring out the cause(probably), but do you know of a solution that would keep this motherboard because i run crossfire? because cash doesn't magicly appear in my pockets.

4

Honestly? Sell both cards, get an R9 Fury or GTX 980. You can keep your board and lose the problems. Just don't try running two cards on that board and it will run like butter.

Or just live without Crossfire for some time while you save up for a better board. Used boards can be found for $80 and will work.

5

thanks for the advice. i think i am just going to find a cpu mobo combo second hand somewhere.

6

I have gotten a solution from asrock support they sent me a custom revision of their UEFI i will explain how to fix the issue here might anyone else encounter the same problems,
Note: me nor asrock is reliable for any damage done to said computer, use at your own risk
UEFI Download(Zip): https://www.dropbox.com/s/fhd7vlzk8ou2nek/970E32_2.30A.zip?dl=0
How to flash the UEFI (ONLY for Asrock 970 extreme3 R2.0)
1. format a flash drive to fat32 format
2. drag and drop the content of the zip(not the zip itself) to the flash drive
3. reboot and mash f6 to enter instant flash mode
4. select the drive.
5. it might reboot a few times but your part is done(for me windows was a bit unstable afterward, but after some reboots all was okay)

special thanks to asrock support who have been amazing.

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