I think I found it, I used a HPT (Highpoint) Rocketraid (PCI) hpt374lf card to do some testing .. put a "raid set on it" removed card ..
returning the card in the machine, went into the bios .. and presto Problems are Gone
Still wierd though a external card can freeze your BIOS
Hmm I might said to soon it was solved agian the same issue
Message was edited by: mr4hughz reason .. problem NOT solved :(
My only suggestion to you is to use a different motherboard. My experience with the DX58SO2 is that it is not reliable with higher end components. Your CPU is in the category of higher end. The RMAs that Intel sends may be worse than what you have now.
BTW, anyone interested in a DX58SO2? Mine is sitting in a box unused waiting to be thrown in the dumpster...
My Intel DX58SO I bought in 2010 was the worst purchase you 've ever done !
If repentance could kill, I'd be dead!