New build, old case and good power supply. B760 Aorus Elite AX, Intel I7 12700K. First boot up to BIOS, okay. Start checking things and wireless mouse freezes for a minuet and then it crashes. Won't boot for multiple tries. cycling though ram and cpu leds landing on cpu. Check all connections, swap ram slots, etc. Boots up. Same thing. I'm in and the mouse locks up. Then cycling again. Get it up with a differnt mouse and port. Same thing. I don't want to flash the bios if it going to crash on me. Suspecting the board. Any ideas?