This message was posted on behalf of Intel Corporation
We regret to inform you that the board you are looking support for has been discontinued already and is not longer under support but as a general recommendation proceed to test the board on a minimal configuration (processor, memory, power supply). Test without memory looking for beep codes, swap components until you find the defective one:
Mother Board S3420GPV does not have beeper .
On my board present only memory and cpu.
I think my board too old and has old bios firmware, that can not works with RDIMMs, early I found that "Server Board S3420GPV requires BIOS 46 or later to support RDIMMs", so maybe it makes sense install UDIMMs and update bios ?
Thank you for advice.