Fatal1ty Z370 Gaming-ITX/ac GPU not detected

I got it finally working again! It is definitly a BIOS-Bug.

If there is a M2 SSD (PCIe) connected and a GPU connected (PCIe) and you do a CMOS Reset, you will get a Black Screen. The integrated GPU of the CPU will also be disabled,(because that is the default behavior after a CMOS Reset if the Mainboard detects a dedicated GPU. So the Mainboard seems to detect the dedicated GPU. But all the display ports deliver no signal.

Now if you shut down your system, disconnect the power cable, remove the M2 SSD, press the CMOS Button and start the system again it will run for a few seconds and restart. After that you will get a signal from your dedicated GPU and you can press F2 to get into the BIOS.

Now shut down your system again and reinsert the M2 SSD. Now your system should start without problems using the dedicated GPU.

TLDR:

1. Remove M2 SSD
2. Dissconnect Power
3. Press CMOS Reset
4. Reconnect Power
5. Start the system
6. The system should run a few seconds and restart
7. Now you should be able to get a video signal from your dedicated gpu
8. Disconnect Power
9. Insert M2 SSD
10. Reconnect Power
11. You system should work properly again

Hope this helps the next guy having this problem.

Had this bug again today. When will this be fixed?

Dear forum users,

Thanks for posting your query to the ASRock forum.

We would like to learn more about the symptoms that are having with Z370 Gaming ITX/ac.

There is some information that we'd like to know.
1. Can such a symptom be reproduced 100% with specific steps?
2. Are the BIOS default loaded?

With thanks,
ASRock TSD

Edited by ASRock_TSD - 15 May 2020 at 3:21pm

Dear Muebbel,

Thanks for the reply.

Since the motherboard of yours might be faulty, kindly contact the store where the motherboard was purchased from for further assistance.

With thanks,
ASRock TSD

Again today. I am contacting support. I am finally done. I just want to return it...