Stuck on A2 on boot

[LuckYNzm]

My MSI 970-G46 motherboard gets stuck on A2 boot code and only way to continue booting is to press DEL and it eventually drop me into UEFI BIOS and i can just continue booting from there but, why does this happend? Its annoying the ever living heck out of me. Also around the same time this started to happend my DVD drive stopped being detected in Windows and BIOS but it's working and is properly connected but simply wont get recognized So what should i do? I think i should flash the BIOS but i'm keeping that for the last resort

 

[Ironsounds]

Hello... sounds like Bioi's Boot problem... wanna try B /
take your time here and be slow and careful to your MB... look in your MB manual/Pdf for pictures and location of the pins. B )
1) un-plug PS from wall.
2) remove MB battery
3) place jumper pins/switch on MB to clear the capacitors... for ~3 mins
4) remove Jumper/switch
5) re-install battery

Look in your manual for the correct RAM slots you want to use/test for "Dual channel" operation with this MB.

6) re-move and re-seat your RAM sticks into the MB for the DUAL channel memory operation slots.
7) plug monitor into the MB video output
8) plug in PS to wall
9) Boot computer.