x99s xpower ac error code 4F "boot modus"

AmiGo_87 · Feb 28, 2015

Hello,

I´m new here and i come from Germany / my english is not so good

My Problem is, i have update my Bios from 1.2 Version to 1.6 Version.
The PC can´t boot now / On the LED screen on my MB says the lattest code "4F"

I have read in my Manual that means "Late North Brigde Initialization"

Before the update the PC was unstabil in den boot Progress and shut down on the Code "A2"
and my DDRAM is not identification in the Bios Settings before, so i have make the update.

Now i can´t start my Pc / this is stand on the Code "4F"

any idear what can I make?
I have read, that here are a lot of "Masters" in Mainboard Settings, so i have tried it here in this Forum.

Thx guys

Need you Informations of my System?

alexoiu · Feb 28, 2015

Hi, If starting the board only CPU and CPU cooler installed, what code getting?

AmiGo_87 · Feb 28, 2015

Nothing / my board need a Ram Stick to boot the first step. Its a cycle to the code 04 and shut down.

With one ram stick boot it to the step "4F" and crashed after 30 seconds.

I have put out my gpu my ssd / hhd for the test // but i need only one ram stick for the other boot processes

alexoiu · Feb 28, 2015

Try clearing the CMOS (unplug the power cord and remove the CMOS battery for a minute).
Of course the board can't start without RAMs, but it is good to check if getting the correct error code.
"Its a cycle to the code 04 and shut down" - something's wrong. It might be the BIOS..

AmiGo_87 · Feb 28, 2015

alexoiu :

I remove the cable and the battery for one minute but the same boot steps comes and stops by "4F"

alexoiu · Feb 28, 2015

I suggest RMA-ing the board, then.

AmiGo_87 · Feb 28, 2015

alexoiu :

I call Monday the factory, ok. And what is, when the Bios update not compatible with my CPU is? Before the update, the Computer runs untabile in the Bios steps but it comes in my Windows...

After the Bios update I have this Problem with 4F.
CPU= Intel Core i7 5820K
and the error code means in my Manual "Late North Bridge Inistialization" what is with this? is this maybe the Problem?

I send it 100% back , thx

alexoiu · Feb 28, 2015

Hard to say what went wrong during the update process.
Since RMA-ing the board, after removing the CPU, check the CPU socket if any bent pin.
Please post back if the new board will solve the issue.

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