Random reboots, error reporting calls it BSOD, next gen hardware

That's great, and just in time too. When you get the new board, get a bright light and magnifying glass and open the CPU slot. CLOSELY examine the pins inside the slot. Make sure there are no bent pins. If there are, RMA it straight back, it will never run right and depending on which pin, may never run at all. Every new board I get, that's the first thing I do. If there is a bent pin, don't waste your time putting it together.

Well, I guess it depends on how you look at it, but I see it as good news. Exactly would we have ever figured that one out? But, you're right. Bent pins, depending on which ones, can even keep you from ever booting it. So, it's great you found that and a good lesson for everyone to do with new boards. Don't be concerned though, I learned the hard way too. That's why it's the first thing I do when I get a new board. Also, placing the CPU in the socket is about the most critical part of the build. If you bend one of the pins, you're done and they are so small, it's easy to do. That's why they are called 'Zero Force Insertion", meaning you use absolutely no force in inserting them, just line up the slots you see on the edges and drop it in. Very well done. Great job. If you need any other help, just let us know. There are a lot of builders here who love nothing more than to help build one, including me.

EDIT: If you can get a good picture attach it. One of the purposes of these threads is not only to help you solve your problem, but to help others with the same problems who may find this thread later on. I think a good picture that will show the bent pins would be good, and may make you responsible for keeping someone from going through all the trials that you went through. But again, great job. Also, when you feel the problem is solved, please mark this thread solved.

Not a problem. That's what we're here for.

Yes, Memtest is the best test we have, but can make mistakes. You say the Nvidia Adapter. Did you install the Nvidia Graphics driver? There should be no Nvidia adapter, it should list your card in device manager under display adapters. If it says standard VGA display adapter, you have no graphics adapter installed.

What did you do with the power settings? Try using balanced. Sleep settings are usually a function of the BIOS, and affected very little by the OS. Your C states in BIOS regulate lower power settings and reports to the OS.

The other option is that there was an issue with some PSU's regarding Haswell. Haswell uses such low power settings that some PSU's could not cope with it. Most of Corsair PSU's were certified Haswell compliant. That is easily checked on Corsair's web site. If you bought an older model of the Power supply, that could be the issue. Haswell uses such low power settings, some PSU's could not cope. You do not need to bother with power settings, simply because of that. With such low power requirements, lowering them can have an adverse effect. I have seen some Haswell machines idle at 0.44W, which is almost nothing. Even a light bulb uses more than that. I'm really not sure the machine could run on less than that.

If you set your power plan to balanced and the bios to default settings, does that make you able to go into stand by or sleep, which is basically the same thing I thing. I don't use sleep or stand by. My SSD is set to never sleep, so I don't have a lot of experience with it. To me, sleep is not necessary with an SSD. That's why you have an SSD. I just shut mine down if not in use. Startup is pretty quick