Darn, I was hoping you had similar issues with an AMD FX processor making it difficult to reboot. That's for another time.
I've got a pair of 1866 MHz dd3 modules in my M5a97 (Non EVO), and it functions properly. It shipped with bios 0503 and had no trouble with memory. It might give you better support if you would update to 0705.
To flash the bios, download the .zip file of said bios from the ASUS website and extract the .ROM file to a USB stick (Not your HDD root directory for some reason, it won't work that way.) Reboot and enter the bios. (Assuming it is a UEFI bios) In the upper right is an option to exit, clicking it will also allow you to enter the advanced mode. There, you can select TOOLS and ASUS EZ FLASH to select the bios file from your USB stick and flash away.