Well, I got a similar problem with that m.2 model.
My board detects the hard drive so I can start installing the SO into it, then, first boot after install, it vanishes completely, not even in the bios.
I've seen the bios options, and yes, I got a i7-5820k which doesn't show the m.2 options which also sucks.
Think bios version is 603.
Maybe a update will solve it or can I sell the disk since I don't want it for storage?
I wanted it as boot drive.
The situation is kind of frustrating, specially when it seems a "software" issue.
I do not want to buy another CPU, just to be clear. 🙂
Just tried the switches.
Bad news, no modifications.
On my mobo manual just says the most stupid thing: m.2 shares lanes with my PCIe 4 which is disabled in a 28 lane processor.
Stupid because that tuning should've been done by software (via bios) or with the dip switches, allowing me to choose which PCIe slots should be active or disabling the last only if I had put them all active on a 28 lane processor.
Suddenly I got frustrated with my motherboard.
There goes a hole in my budget.
My solution is: buy a 40 lane processor and pray someone will buy back your current 28 lane one.
i got the 950 pro
well, I've loaded the default settings, so I don't think that's the problem, unless by default, something is off.
do you know what modifications you made to your's?