CPU issuing reset.
 

We have a COM Express carrier board with Intel Atom processor.What happens is COM board issues a reset signal every 3 sec.I am not sure whether its entering BIOS or not..I could not hear any beep..It is difficult to probe the POST error codes on port 80 in this board.And there is no way for display also..Is there any fatal errors where BIOS resets the CPU..?..As far as I know it just halts on encoutering a fatal error..pls throw some light...

Is it possible that the CPU carrier has a watchdog chip that needs to be kicked, but is not? Many embedded systems use such a system to provide a recovery mechanism for software crashes. Did the board ever work? Is there a valid system ROM or other bootloader on the board? Not much info to work with here.
--- rod.