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Asus Crosshair VI Hero Q-Code 8 / Not Starting

nazzario
Level 7
Hi

I have a big Problem and i hope someone can help me.
Yesterday i have received all my components. Ryzen 1800x, 32 GB Ram, M.2 SSD, RX480 Graphic Card and Silent Loop 280.

I have installed all components and now the PC is not booting. I received the code 8. My Problem is i cannot goes into the bios because i have no Screen.
The RGB on the Boards is ok. The CPU-Ready is green but the onboards LED is off.
I have tried to remove the RAM, than just use 1 Ram /2/3/4 etc. I remove all other components, Graphics Card, SSD but still Code 8 and nothing working. I just not removed the CPU because it's a lot of work. And the Status is green so i think that will be ok.
I Flashback the bios to 0902 from the asus page and i think that installed sucessfully.

I don't know what i can do and i hope someone can help me.

Thanks and Regards
Nazzario
1,457 Views
51 REPLIES 51

I have the exact same issue. None of the provided workarounds of flashing bios, bios reset, removing battery, etc, worked. I am RMAing the board, though I am now tempted to switch to Asrock or MSI because they just seem to work fine.

Same happened on mine 0702 & 0902 . I got the mainboard working by removing the CPU first time . Died 3 days later so I just removed the water block and lifted and lowered the cpu socket arm . I think with mine its a problem with the EK rear rubber gasket which hopefully should be in the post today . If it works it comes up as a new CPU . Hope this helps .

BTW tht took me 3 hours of stripping a dual custom loop system . To find out its a 50 second quick fix 😞

Firemonkey wrote:
Same happened on mine 0702 & 0902 . I got the mainboard working by removing the CPU first time . Died 3 days later so I just removed the water block and lifted and lowered the cpu socket arm . I think with mine its a problem with the EK rear rubber gasket which hopefully should be in the post today . If it works it comes up as a new CPU . Hope this helps .

BTW tht took me 3 hours of stripping a dual custom loop system . To find out its a 50 second quick fix 😞


EK rubber gasket is a huge problem right now with the C6H, because there's some sensor points around that area, iirc, and the rubber gasket is slightly conductive, thus making the board not post. Remove the inner part of the rubber gasket (as if you had an 115x board) or use a thin non-conductive layer between the rubber gasket and the mainboard.

What does that ominous Code 8 mean anyway? The DRAM LED is lit, but I see it happen with failed CPU overclocks while RAM is running at stock clocks. I also saw it happen with a failed overclock where HWinfo reported L0 cache Windows Hardware Errors (WHEA) short before the screen went black.

It seems that every time my screen goes black after a successful boot I get a code 8, regardless of what my CPU and RAM are set to. And here I read reports about code 8 cases where the mainboard seems bricked. So the code and LED are not exactly giving specific information about the source of the issues, but seems to pop up for all kind of problems?!

Simply said, code 8_ is a CPU failure of whatever kind.

Even if the DRAM LED flashes on a Prime95 crash, the code 8_ signifys a problem on the CPU side (usually when overclocking) because of a vDroop, too low vCore or other issues.

Thanks for the heads up on that kobura . If the new one fails then I will either do that or dremel the standard one that comes with main board . beta Bios 1001 any good btw ? When I've sorted the gasket/back plate might give it a go as I want me mem back to 3200

Firemonkey wrote:
Thanks for the heads up on that kobura . If the new one fails then I will either do that or dremel the standard one that comes with main board . beta Bios 1001 any good btw ? When I've sorted the gasket/back plate might give it a go as I want me mem back to 3200


The standard backplate that comes with the C6H doesn't have this problem, it's just EK.

I'm on 1001 right now, still has some quirks (lost control of fans in AISuite), but CMOS reset fixed that for me.

Hi everyone

My Problem is fixed now. I have received my new Mainboard today.

Now my Problem was i had Code 8 and no q-led lights on startup. So that i mean id could not be another Problem.
So now it works fine. Thanks all for Support and i hope this could be help someone.

nazzario wrote:
Hi everyone

My Problem is fixed now. I have received my new Mainboard today.

Now my Problem was i had Code 8 and no q-led lights on startup. So that i mean id could not be another Problem.
So now it works fine. Thanks all for Support and i hope this could be help someone.


Not exactly the best resolution, but it looks like I'll go ahead and RMA as well. Glad you had a retailer nearby to do it at!

Kobura wrote:
EK rubber gasket is a huge problem right now with the C6H, because there's some sensor points around that area, iirc, and the rubber gasket is slightly conductive, thus making the board not post. Remove the inner part of the rubber gasket (as if you had an 115x board) or use a thin non-conductive layer between the rubber gasket and the mainboard.


Firemonkey wrote:
Same happened on mine 0702 & 0902 . I got the mainboard working by removing the CPU first time . Died 3 days later so I just removed the water block and lifted and lowered the cpu socket arm . I think with mine its a problem with the EK rear rubber gasket which hopefully should be in the post today . If it works it comes up as a new CPU . Hope this helps .

BTW tht took me 3 hours of stripping a dual custom loop system . To find out its a 50 second quick fix 😞


are you guys able to overclock? i'm using the CPU backplate that came with the motherboard, not the EK backplate. my system runs fine with an EK supremacy EVO at stock speeds. but when i OC it crashes to the 8_ error code after the temp shoots up to 90*C+ when doing CPU intensive junk like cinebench.

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