We would like to inform you that replacing the CMOS battery should not affect the boot and POST sequence.
Here are our recommendations:
Test the system out of the chassis on a minimal configuration, remove all memory and look for beep codes. Check for lights and fan activity. If there are beep codes without memory, start adding each memory module individually. If no beep codes, proceed with a BIOS recovery test:
Swap components if possible and if the issue still persists proceed to replace the board under warranty.
I've done the BIOS recovery test, without results.
And the problem I've had with 2 motherbords !!!
One question: I've tried before three moterboards DH61AG BOX version, and I not had any problems.
This problem I've with 2 motherboars BULK version. Is there a difference between versions ? (I think not)
To answer your question, the issue you are experiencing is not related to the product code version of the board. There is no specification differences between these versions.