Hello, I'm looking to see if I could get some help booting into Raid. I'm trying to run Raid 0 using 2 Samsung 840 Pro 256GB, but when I press Raid or boot ibto Raid on the Bios menu, it never boots into the menu. I've gotten my ROG Laptop to boot into Raid0 no problem(2 X 250GB Samsung Evo SSD's), but this mobo just won't let me Can someone please help me? My build is:

Maximus Hero VI
Intel i7 4790K
32GB Ripjaws Z 1600 MHZ Ram(2X8GB[X2])
PNY GTX 770 4GB Enthusiast OC
Samsung 850 Pro 512GB SSD (for Boot right now since I can't get to Raid using 2@256GB 840 Pro SSD)
2X250GB Samsung 840 Evo SSD's for Storage
750GB Samsung 840 Evo SSD Storage
3TB 7200 RPM HDD
2X256GB Samsung 840 Pro SSD(Nothing on them, not even formatted)