2nd Graphics Card doesn't activate at bootup

[Oatamelian]

Hello Experts!

 

I am experiencing a rather annoying problem with my crossfire setup... Outside of the usual problems multi-gpu setups come with. One or Both GPU's can decide they won't turn on when everything else does.

 

So I've been trying to finish my CPU OC with an absolute certainty that it's not going to crash whilst i'm doing uni work. When it crashes and I need to turn off the PSU, the following boot after turning everything back on again appears perfectly normal until I start up a game and find that I've only got a single card displayed in msi afterburner stats. Checking device manager, amd crimson etc, all confirming that just one card exists... 

 

A few times neither card decides to turn on, so the desktop is booting into windows and I can see the usual routine it does from the response of my keyboard backlight but neither card is ON 0____0 

 

I am not entirely sure what is going on here, does anyone have the faintest idea?

 

Be Quiet DRP2

4690k at 4.5 

Asrock Z97 EXT 6

2 x PowerColor 7950 (pcs+ versions but with NZXT G10's and Corsair H90's)

EVGA G2 750w 80+ Gold

 

Anyone ever experienced these problems before?