The puzzle of the three X99 motherboards

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21 Sep 2010
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455
Can anyone work out what is going on here:

The players in this story are three X99 motherboards, one 5820K CPU, 16GB Kingston RAM, Windows 8.1 on a DVD, Windows 10 on a flash drive, and a pair of SSDs.

Motherboard A seems to work OK with all of the above components installed into it and either copy of Windows.

Motherboard B crashes when on the 'installing devices' part of Windows installation using either copy of Windows and either SSD.

Motherboard C also crashes at 'installing devices' using either copy of Windows and either SSD.

What is causing this problem? I had thought motherboard B must be faulty, but motherboard C is doing exactly the same thing and it is unlikely they both have the same kind of fault. I then thought maybe the SSD was dying, but a second SSD does exactly the same thing. But it can't really be the CPU or the RAM because those both work fine on motherboard A.

I'm stumped.
 
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OP
Joined
21 Sep 2010
Posts
455
Make it a fourth X99 - I was able to borrow a fourth motherboard which also will not load Windows. I'm using a USB flash drive for Windows 10 and a SATA DVD drive for Windows 8.1. I've tried different USB ports for the keyboard/mouse too. Really can't figure this out at all. Clearly there is something wrong with a part that is not the motherboards and probably not the Windows either. I've tried different RAM in different slots with no effect. The only thing I don't have duplicates of is the CPU, but that seemed to be working with the first motherboard.
 
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