Not able to change any settings in BIOS (boot failure) - Gigabyte mobo.

So I have had this issue for a long time. Like the title suggests I am not able to change any settings on my Gigabyte mobo. I've posted this issue on Tom's hardware forums but those lovely people chose to just completely ignore my problem so I just said meh and forgot about it as it works fine when I don't change anything. But now after about a year and with Arma 3 being out I would like to increase performance a bit. I'll post here what I posted there and see if you could help me out.

"I have a problem with changing ANYTHING on the bios of my Gigabyte GA z77x ud3h. My other specs are GPU: Club3d HD7970
PSU: Corsair tx650m
CPU: Intel i5 3570k
RAM: Corsair vengeance 8GB DDR3 (1600MHz)

So what is my problem? I first noticed when I got into the BIOS and tried to overclock the CPU to 4.0 Ghz by changing the multiplier on the CPU cores to 40. I saved and the PC rebooted. Then when it booted. A message from the BIOS popped up and said I had failed to boot, because my settings might be incorrect. And I had the option to either change to optimized defaults and reboot or to enter the Bios. I found this strange so I loaded the optimized defaults. Everything worked. But I still wanted to overclock so I tried again. Going even lower: Same result. It was then I noticed I cant change ANYTHING, I tried overclocking the memory: Same message. I can't even change fan speeds without getting the failed to boot message. Any idea what the problem is? Oh and also. My ram has a standard speed of 1600MHz but is in 1333MHz by default on the bios.
Thanks"

For some extra information. I have my BIOS updated to the latest version as well as my drivers. The system works just fine with the default settings leading me to believe my motherboard is not faulty. I have also tried overclocking with Gigabyte's Easy Tune 6 but that yields the same result. I've had the CMOS battery out for 10 seconds too but that didn't work either. It's a very strange and difficult problem. I have took a picture of the boot failure message and will upload it. Any help would be appreciated. Thanks in advance .

 

As far as I can tell, the boot order is the only thing I've been able to change. I'll come up with a more concise answer later though as I'm pretty tired atm. I'll check out exactly what I can and can't change tomorrow. Thanks for your reply.

 

Hi I would reflash the bios with the efiflash tool.

Interesting read here.
http://forums.tweaktown.com/gigabyte/28441-gigabyte-latest-beta-bios.html

 

Thanks for the replies guys. I will try this out once I'm able to fix (yet another) problem that has arisen. Now, out of nowhere my BIOS isn't able to load anymore. When I started up my PC, I got the splash screen just fine, but when I loaded into the bios 1/3 of the screen was blue and the BIOS wouldn't respond (pictures attached) I was forced to restart so I did, getting the same problem but now with about 1/6 of the screen being blue. Another restart made splash screen freeze up (without it responding to any button presses. Last restart got me past the splash screen again but now in the bios the whole screen was blue aside from the gigabyte logo and UEFI BIOS

I've now taken out the CMOS battery and am keeping it out for a few minutes. See if that helps, otherwise I may have to RMA the mobo which is something I don't want to do as I need my PC for a lot of things.


UPDATE: Taking out the CMOS battery did not work. What did work however is a regular boot. It loads into Windows just fine and dandy like always. I'm too scared to switch it off now... what to do? Should I try flashing back to the Award BIOS?

 

Yes, as Allheart55 suggested.