Enabling Secure Boot Results in Black Screen

Hello, welcome to Microsoft Community

Thank you for your feedback, According to the problem you described, I would like to state what I have learned, and I have a few more questions to confirm, which is very helpful to judge this problem.

You solved the previous black screen problem by replacing the motherboard.

Is the black screen you described not displayed after power on? Have you seen any logos? After replacing the motherboard, can you use your system immediately? Have you ever reinstalled your Windows?

If your answers are all negative, this may just be a simple motherboard problem. Maybe you can try to turn on the secure boot function again.

Have you contacted the manufacturer for the motherboard that has encountered problems before? If so, have you got the answer to this question? If your answer is no, it is recommended that you contact the manufacturer of the main version for assistance

I hope the above information can help you. If my understanding is wrong, please point it out, so that I can assist you better.

Lugoo Bei|Microsoft Community Support Specialist

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Thanks so much for the reply!

As for your questions; I solved the problem by replacing the motherboard yes.

When the old (presumably broken) motherboard is powered on, I get no video output whatsoever. No brand logos, text, or images, just a black screen. After replacing the motherboard and connecting everything else in the same configuration, the system worked immediately on first boot with no issues.

I have indeed reinstalled windows before about two years ago when I got a new SSD, but other than that I haven't, Certainly not recently. I believe I used the Windows Media Creation Tool.

Thanks for suggesting reaching out to GIGABYTE, I actually hadn't considered that. I will reach out to them ASAP. I can reply to this thread when I hear back from them.

Thank you for your help!

Thank you for letting me know your progress. I will continue to follow this post. If you need our assistance, please reply again

Unfortunately GIGABYTE Support has not been much help. All they've suggested is doing everything I already tried (removing cmos battery, shorting pins, etc). Its been 6 days since I've last heard back from them.

I am honestly totally out of ideas for as to how to solve this. Im wondering if it was just an issue with that board/bios. I went to a support discord for my motherboard's manufacturer and spoke to a few seemingly knowledgeable folks, but english was not their first language and all they could make out to me was that it was "a bug with the bios," with no real indication as to whether or not it was safe to try again. Today I flashed the bios to the most recent version (f12), as I was looking at the bios versions and read that this update addressed some serious security concerns. (I literally had to take a few hours to remove some nasty malware today, so I've been eager to stay safe on the PC lately,)

Still haven't tried anything else out of fear of bricking the board, though. Really wish I could know the bios version on the bricked board. None of my friends have any CPUs with integrated graphics that would fit in the LGA1151 either, which would be a monumental help.

Thanks for your reply. I have some questions about this.

Is there any difficulty in repairing the motherboard that failed before?

However, if you have any idea, you can try it on the motherboard with problems one. It doesn't seem to produce worse results, and it may even be able to fix it。