A2 postcode and long boot times

[FINIS08]

I recently built my first PC and started having some issues yesterday. Here is my build specs. 

 

-Motherboard:  MSI X99S sli krait  edition

-CPU:  I7 5820K with Corsair H105 water cooler

-G Skill Ripjaws V Series 32G 3200 ram

-GPU: EVGA Titan X hybrid

-PSU:  EVGA Supernova G2 850

-Samsung 850 SSD 250G

-WD 1TB Blue hard drive x 4 in RAID 10

-Windows 10 pro 64bit OS

 

Problem started after using the OC genie setting on my mother board.  It started by not booting and had an A3 postcode.  I had to change to settings from IDE back to raid and then it would boot.  Since then at start it shows the raid setting and sits on a black screen for a few minutes with the A2 code in the bottom right. After a few minutes it goes to the bios page for another minute and then finally boots up windows. I have since turned off OC genie and it stills has the same issue. I have checked the boot priority and made sure the SSD was first. The computer runs after booting up without any issues noticed as of yet. I know it may still be working, even if not correctly, but it really is bothering me. Is there anything I can do to fix this issue or is it just how it's going to be?  I am still kind of new to PC building and troubleshooting so if there is any other info needed let me know. Thanks in advance for advice!

[TDP_Equinox]

A2 on MSI is boot device error. 

Unplug any USB devices and restart. 
Then plug one device in at a time and see which device causes the A2 error on boot.