Looks like you need BIOS 2 to support that CPU
Athlon X4 Richland AD760KWOA44HL 760K 100 3.8 3.5M N/A A1 100 N/A 7721v20.zip
So unless this is on the mobo now, it may not or wont turn on
http://www.msi.com/support/mb/FM2-A75MA-E35.html#support_download