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Stability issues with Z97E-ITX/ac mainbaord
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Termie View Drop Down
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    Posted: 13 Nov 2015 at 7:27pm
In the meantime (~2 weeks ago) I received a second Beta BIOS from ASRock Support. The Broadwell
runs almost fine with it, so far, so good. But when I look to other manufacturers, their BIOS offers
nice Broadwell features like

Smile set/raise Broadwells max. TDP
Tongue overclock and overvolt Iris IGP
Clap set eDRAM ratio (clock relatively to baseclock)

So what about an 'official' final Z97E-ITX/ac BIOS which supports Broadwell features better?
Anything in progress in this regard? I´m not really happy if I have to work with a Beta BIOS in the
medium term.


Edited by Termie - 13 Nov 2015 at 7:29pm
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Originally posted by TylerL TylerL wrote:

After a handful of crashes within just an hour of gaming early last night, I checked the ASRock download section on a whim, and noticed and installed the beta BIOS.

Not a single crash over 24 hours later. So far, so good...

That is great news, thanks for letting us know Thumbs Up
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Points: 2 		Post Options Post Options   Thanks (0) Thanks(0)   Quote TylerL Quote  Post ReplyReply Direct Link To This Post Posted: 25 Oct 2015 at 11:28am
After a handful of crashes within just an hour of gaming early last night, I checked the ASRock download section on a whim, and noticed and installed the beta BIOS.

Not a single crash over 24 hours later. So far, so good...
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Thanks.
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Greetings, This is ASRock Technical Support Department.

Please download the BIOS P2.00 which update Microcode to 13 from the link for try.
http://www.asrock.com/mb/Intel/Z97E-ITXac/?cat=Beta 

If any, please feel free to contact us.

Kindest Regards,
ASRock TSD
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Points: 17 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Termie Quote  Post ReplyReply Direct Link To This Post Posted: 22 Oct 2015 at 2:03am
noticed just now... yesterday many ASRock Z97 boards received a BIOS update, only Z97E-ITX/ac owners leave empty-handed. Confused
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Points: 17 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Termie Quote  Post ReplyReply Direct Link To This Post Posted: 20 Oct 2015 at 2:28am
Ouch... thank you for this not unimportant thread. An i5-5675C is practically ordered here, but now I have to delay this, too bad. I also hope that an updated UEFI/BIOS for Z97E-ITX/ac which fix this issue will be released soon.
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Anything?

I've tried loading the microcode update someone extracted from a MSI BIOS (version 0x12 - it seems there is version 0x13 by now which I haven't tried yet. Version 0x13 disables TSX which apperently is also broken on Broadwell) for my CPU under Linux and can confirm that there are no more crashes. Maybe this helps others with the same issue. I have no idea how to do the same thing under Windows though and even under Linux this is more of a stop-gap solution than a real fix. So I'm still waiting for an answer or even better yet, a BIOS update.
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My question is still unanswered. Will there be a BIOS/UEFI update any time soon? It can't be that difficult to replace the microcode in the BIOS with the new version.
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Apparently, a CPU microcode update is what fixes the issues.

https://github.com/bgw/bdw-ucode-update-tool
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