Rampage IV BE intermitent boot issues Win 7 and no go with Win 10

[raglafart]

I've had a suspicion that there's something wrong with my Rampage 4 BE.
It doesn't successfully boot into windows 7 every time and will hang at the "Rampage Screen"
It doesn't do it every time. I now close every application before I shut down.
Maybe one in ten it will hang and I'll have to hit the reset button, this doesn't always give me a successful boot and I may have to hit
reset another 1 or 2 times on the odd occasion though typically once I hit the reset it will boot into Win 7.
I've tried disabling the fast boot, but this doesn't seem to make any difference.

What now has me worried is that I've tried to load Window 10 preview (Build 10074) on an spare 120 GB Corsair SSD.
I've had no success getting this to boot other than once or twice. It will go blue screen and wind up in a never ending loop trying to
repair itself. I had an earlier version of Win 10 running for a short while on this other drive, but that too eventually wouldn't
boot at all.

I don't know if the two issues are related as it all seems like something is going wrong in the pre boot stage.

I'm no expert and pretty much self taught and have no idea what to do to try and resolve this continuing and
highly annoying boot issue.

I've regularly updated my bios and am running version 0701,
I didn't bother with 0801 as it was only to support 8 x 16GB ram modules, though I am running 64 GB of ram.

Any help sorting this issue would be appreciated as I would like to be able to run Win 10 on this machine when it's finally released.
I'd also like it to boot first time every time, or is this an acceptable trait with some mother boards?

Many thanks
John

[ChiefZeke]

Any chance you have another power supply to swap with the one you're using? And, NO it is not an acceptable trait with any motherboard.

[raglafart]

Not easily. I pretty much bought the Corsair AX 860i hoping that the quality of that power supply would be sufficient guarantee against
power supply problems.
Thinking about it, this is actually the second unit as the first was doa and I had to do an RMA on the original unit?
It would appear you are saying the power supply is a possible source of this problem? I'll be pretty peeved if that's the case :mad:
I've just dug out a fairly basic Chinese made Titan-750 750 Watt unit I guess I could hook up to the just Motherboard and CPU
and leave the AX to drive the ancillaries.
The Titan doesn't have enough outputs to drive the Graphics card and CPU, the CPU uses an 8 pin and 4 pin connector which only
leaves a single 4 pin power plug for the Graphics card which needs a 6 and 4 pin plug.

Is that a starting place?
Cheers John

[ChiefZeke]

Based on your description of what was happening my troubleshooting mind thought of the power supply. But, in order to validate my assumption you would have to be able to provide power to all of your devices - and that would require a unit capable of powering the cpu, video card, etc.