New Computer Won't Boot Into BIOS

It needs BIOS 0701 on the mobo before it'll support that CPU

AMD AthlonX4 860K (FM2+, AD860KXBI44JAA, 4C, rev.A1, 3.7GHz, L2:2M, 95W) ALL 0701

This is the 2nd to last BIOS on the ASUS site. If this isnt on the mobo now, it wont do anything

If this is the case you'll either have to take it into a shop ask them to flash the BIOS with a CPU the mobo does support, then put the 860K back in

Or buy a CPU it supports then do it