H170A-X1/3.1 boots to BIOS sometimes

Hi,

I've an annoying problem with my new H170A-X1/3.1 (BIOS 1.90). The MB sometimes (not always) boots straight into BIOS after a power reset (no power -> power on -> straight into BIOS).
There is no real error messages, the BIOS settings are correct.

I already did change the MB because I thought that my first one was a faulty one but it is the same with the new one.

I did change a few BIOS settings, I'm guessing it has something to do with the WOL (wake on lan) function. WOL is working (as it should).

Any clues?

My system:
i5-6500
Samsung SSD 850 Evo 500GB
Toshiba X300 6TB
be quiet! Straight Power 10-CM 500W
KINGSTON DDR4 32GB 2133MHz Non-ECC CL15 DIMM (Kit of 2)

UPDATE:
There was a solution to my problem, please follow this link for a quick solution



Edited by cybermcm - 13 Sep 2016 at 4:08am

@wardog: my RAM: KVR21N15D8, my MB is not listed on the Kingston page but this is a standard RAM module, no OC, so I'm quite sure that this is not related to the RAM modules...

any ideas where to look?
I never owned a Asrock board before, is it useful to create an official bug report anywhere since I'm quite sure that this can only be solved by an update?
The problem will be that it is hard to convince anyone at Asrock since it is not really reproduce-able (but I have found topics here with the same problem) but it happens...

cybermcm wrote: @wardog: my RAM: KVR21N15D8, my MB is not listed on the Kingston page but this is a standard RAM module, no OC, so I'm quite sure that this is not related to the RAM modules...

While there are only two platforms that support DDR4 memory currently, X99 and Intel 100 series chipset boards, we have learned over time that these two platforms have different SPD and XMP memory profile settings, and are not 100% compatible. They usually need to have some of the memory settings manually adjusted, VCCSA and VCCIO in particular.

Your's is the second model of Kingston memory I've checked today that has its compatibility list link removed:

http://www.kingston.com/us/memory/search/?partid=kvr21n15d8k2/32

Your board's Memory Support list does include your Kingston memory model, although the model number you gave cut off the capacity.

Your memory is the Double Sided (DS) type. That type of memory should be used in the A1 and B1 slots. No idea if you use them or not.

When an ASRock board starts into the UEFI, that means it thinks a UEFI setting is wrong. Or, the Boot Failure Guard feature has detected a failed boot, and restarts the board into the UEFI to "fix" settings, normally a bad CPU or memory OC.

update:
I did switch back to default UEFI settings and there was no boot to BIOS since this action. I'll continue to monitor this and then try to set my desired BIOS settings step by step. I'm still guessing that this is somehow connected to an UEFI setting...