GA-Z170X-Gaming 5 BIOS F5 sometimes resets

[ramonsmits]

It has already happened twice that after a reboot my BIOS settings got changed / reset to defaults.

The first time I was running F5 and after a reboot it was back at F2. All CPU settings got reset and my Intel Disk Controller and RAID settings were gone too! I had to flash the BIOS and adjust all settings again.

I thought lets save this profile for when it happens again!

Today it happened again but now the BIOS stayed at F5, CPU timings were still the same but the memory XMP setting got to the default and *again* my RAID configuration was gone and back at AHCI.

Instead of configuring all settings again I wanted to load the previous profile. I selected it but then the BIOS hung. I waited several minutes and decided to reset. After entering the BIOS I tried loading again and the same thing happened. Resetting the machine again, entered BIOS and did a reset to default, configured all values again.

Now I'm not entirely sure but could it be that EasyTune can result in this behavior? I remember I ran that a few times but I am afraid of launching it. I do hope that this will not happen again :-(

Any clue on what can cause this?

[autotech]

I have the same board with same bios and it has not happened to me. Sounds like your overclock settings might have done it if you are overclocking it and the time it went back to F2 it recovered from the backup bios chip.

It could be that easy tune could cause this but I never use that program I am old timer and just go into bios itself and change what I need changed. Try not overclocking ram and leave it at default to see if it happens again if it does you know it isn't ram timings or settings then check with cpu overclocking and see if it happens again. Narrow it down till you find what is causing it if none of that works try using easy tune and see if it happens then you will know what it is and be able to take steps.
Learn to overclock it without using that program it really isn't that hard.

[ramonsmits]

Just happened again! Turned on the computer and didn't boot. Restarting and entering bios enabled the compatibility settings. Disabling that resolved the issue.

I didn't touch EasyTune at all and not overclocking RAM. Just did a normal shutdown yesterday and turned the system on.

[shadowsports]

Wanted to add this in case of relevance. 

If you have Profiles saved in BIOS, we have seen posts from others who have intermittent boot problems because of a corrupt profile.  The solution was reflashing the BIOS to the same rev, loading defaults and setting up from scratch. 

You may want to disconnect your RAID set while troubleshooting to protect your data.  It can be easily re-added and picked up again once you get this resolved. 

[ramonsmits]

With the same rev you mean that I flash F5 again? That is what I already did. I'm not sure if I understand you correctly.