When I load defaults enter bios and change the settings as you describe (the first part above) my system fails to post gives me one long and three short beeps...I cannot enter bios.
As I have my bios profile saved I simply hard reset the bios(jumper) and then enter bios to reload the profile.
My system is a raid config so beyond the above and short of reconfiguring and reloading an OS its about as far as I can go really as I dont feel the need to use secure boot.
Damn, sounds like you don't have quite the same issue after all. For me it's one of the two outcomes above (depending on whether the secureboot keys are loaded), and with the second type there is definitely no beeping.
Are you using a discrete GPU, and if so, what is it? As per dmdilks' post, you must have a UEFI GOP GPU to use secureboot. Any other add-on cards? My system (currently stripped down for diagnostic purposes) consists of motherboard, RAM, CPU (using IGP), and single SATA SSD.
I doubt Gigabyte will address the problem, after all,the board is now relatively old and the number of users with this issue will likely be small. I'm afraid you will likely be fobbed off with a hardware excuse when in fact it is highly likley the issue is indeed the bios implementation.
Yes, the rep already told me my board needed repairing, but I persisted, and they actually seem to be putting some effort into replicating the issue.
I'm 99% sure it's not a fault with my board, because I've found one picture of the exact same pattern of BIOS UI corruption I get (gigabyte board, but a different model), and also numerous forum mentions of the bootloop issue (all in different Gigabyte boards, but from around the same era as the M3). All of these complaints linked to SecureBoot. Really, what are the chances that my board has a unique fault that just happens to manifest itself like these known issues. When I gave the rep my list of secureboot bootloop mentions, they insinuated that it was a known issue, but that it had been fixed in all those boards via BIOS updates. Maybe the M3 slipped through the cracks?
The rep tried to reproduce the issue on an in-house M3 unit, but apparently could not. I gave them more specific information on my BIOS configuration, and now I'm waiting for a response. So as I said, they do seem to be taking it more seriously than I would have expected for such an old board.
The other thing that gives me hope is the fact that they've already supplied me with an F11 BIOS without the vulnerable SystemSmmRuntimeRt driver. (Obviously when I asked for the SystemSmmRuntimeRt fix I wasn't aware that SecureBoot was totally unusable on the board)
I was just really hoping to find another user of this
specific model who had seen
exactly the same results as me, so I had some unequivocal evidence to point to outside of my sample of one.