A) the power cord needs to be metered to see if it PSU getting power.
B)Test the new power supply on a different MOB and see if is PSU or meter it out and check the power switch is on the PSU.
C) MOB has gone to heaven.
Might be windows is trying to run the hardrive and it can't because something happend to the hardrive or you need to steup your boot drive in your BIOS
If you can get in to the drive make image back of every thing on your drive on a backup drive you can use windows backup witch works. then go to the manufacture website of your hardrive and download there diagnostic tools.
Trevor87 replied to Arcilon Samogar Gumich's status update on LinusTech's profile
Are you going SLI ?
Seconed question is are you going to just game on it ?
Because both have there pro and cones. For game Skylake CPU and haswell-E are the same in performance. .
There are two good board models you can look at the one you are looking at then the H97. The guys question under you. You can only use DDR3L and DDR4 on skylake CPU.