Problem Board

I've been with the board so my problems. One week it ran smoothly. Since today my Raid 1 is no longer detected, the computer hangs before the BIOS and will not let me into the bios (Error Code A2). Error means HDD problems. The strange thing: There are 2 identical hard drives. Neither (not individually) goes. Plugged by Hot Plug functions under Windows (without drives, the computer starts so) - and lo and behold, the hard drives are ok.
But thanks Raid I can not just the plates plugs on and off - Rebuild is the result. My turn on the error analysis -'m sure when the error, it is not the bewärten plates which I have already 2 years of trouble free, but the Board.
So be careful!
Otherwise, it would certainly be a good board.

Addendum:
After a bios update (which I had to do on Windows, because I did not come into the bios) now for 3 weeks, the board is running properly and stable. As written in the commentary, my confidence in the board and MSI is still not all too high. Has a new board which problems with 2-year-old hard drives and then wants me fobbed off with an "A2" without starting without letting me into the Bios. A more senseless error handling I have not yet come across. 2 stars, because it is now working as expected - but pure function is not everything. If I build a system, then it should be any problems from the outset. Asus or Gigabyte motherboards have given me in the past, better services when it comes to this kind of reliability.