I have just built a mining rig frame. Picture here
http://sv.tinypic.com/r/2a0kcoy/8
At first I used a asrock motherboard and it was going just fine for about 2 days with 3 280x cards. But then it just stoped responding. All fans was going and so but the rig was just not accesable.
Then I bought a ASUS M5A99FX PRO R2.0.
I started with 2 x280 cards with 16x - 16x risers. Was working just fine.
Then I added another x280 on a 1x - 16x powerd riser without the power inserted in the riser.
The the rig would just not boot anymore.
Tried another PSU. Just nothing.
Removed the 8 pin psu connector from motherboard, then all fans started and so on. Connected the 8 pin again. Everything dead.
Would be greatful if anyone hade any Idees. Is the rig frame wrong, am I connecting things wrong, is my psu bad, anything.
The rig you show seems good, its even better then my rig actually. I think its more of a software problem (ie. window) then hardware problem. Otherwise buy a external fan would help..