System runs on it's own the way it is setup, no issue there.
The moment I shutdown, cut the power with the PSU kill switch in the back to deny all power, I plug in the SATA cables and the required power cable for the harddrives, the system will refuse to turn on.
I get a power signal on the power when I give it power; Green light.
Push the power switch, nadda'. Nothin' .
I remove everything I attempted to add; Power and SATA cables to disconnect the drives, and the system boots just fine, and even in it's OC configuration.
MB: Sabertooth Z97 MARK 1
CPU: Intel i7 4770 Haswell
CPU Cooler: Corsair Hydro H60
PSU: Corsair RM750
GPU: EVGA GTX 960 ACX FTW Edition
RAM: 8Gb (x2) Corsair Vengeance
SATA 1 (OS): ADATA SSD Premier Pro SP900
SATA 2 (Storage): HyperX SSD 3K
SATA 3 (Storage): WD Red NAS 1TB
Attempting to add 3 Harddrives; 2 Seagates, and a WD Blue.
Currently unable to add any of them, in any configuration.
My only thought at this point is that I'm possibly capped out on the power draw? Didn't think I was using that much power.
All I'm trying to do is check the harddrives, and pull any data from them so I can donate them. >,<