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Maximus Z690 Hero won't post; stuck on Q-Code 00

krassyg
Level 7

‎07-13-2022 08:44 PM - last edited on ‎03-06-2024 10:20 PM by Community Admin

The fans spin up briefly and that's it. No signal going to the monitor; Q-Code is stuck at 00. Q-LEDs are off. Unplugged everything from the motherboard except the power cables; same thing. Was able to do a BIOS flashback; no help. Any ideas?
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8 REPLIES 8

RedSector73
Level 12

‎07-13-2022 08:55 PM

Any chance overtighten cooling solution (cpu heatsink), back it off 1/4 turn on the screws.
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Silent_Scone
Super Moderator

‎07-13-2022 11:04 PM

Hello,

As above,

Check motherboard stand off screws aren't over-torqued

Reseat CPU whilst checking for any bent pins, then remount cooler whilst ensuring even mounting pressure

If no joy, remove the motherboard from the chassis and retest
13900KS / 8000 CAS36 / ROG APEX Z790 / ROG TUF RTX 4090
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krassyg
Level 7
In response to Silent_Scone

‎07-14-2022 04:48 AM

Using Corsair 150i Pro RGB with the proper stand off screws. Did it anyway and reapplied thermal compound; no joy. So you guys think it is CPU related? I was using the same CPU and RAM with another motherboard( Asus Prime Z690-P) and it was working fine. Updated the BIOS and decided to try the XMP-2 settings on the mobo and the system died; reset bios, etc. nothing helped. Now I am getting the same problem with the new mobo; CPU KIA? i7-12700K.
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Silent_Scone
Super Moderator
In response to krassyg

‎07-14-2022 05:05 AM

krassyg wrote:
Using Corsair 150i Pro RGB with the proper stand off screws. Did it anyway and reapplied thermal compound; no joy. So you guys think it is CPU related? I was using the same CPU and RAM with another motherboard( Asus Prime Z690-P) and it was working fine. Updated the BIOS and decided to try the XMP-2 settings on the mobo and the system died; reset bios, etc. nothing helped. Now I am getting the same problem with the new mobo; CPU KIA? i7-12700K.


Given what you're saying above, it sounds like the CPU needs to be RMA'd, yes.
13900KS / 8000 CAS36 / ROG APEX Z790 / ROG TUF RTX 4090
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RedSector73
Level 12
In response to Silent_Scone

‎07-14-2022 08:47 PM

Silent Scone@ROG wrote:
Given what you're saying above, it sounds like the CPU needs to be RMA'd, yes.


I would try running the motherboard, in the motherboard box, but I also agree code 00 is CPU DOA unless standoff screw on board causing issue or overtightening of the heatsink.
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Silent_Scone
Super Moderator

‎07-14-2022 09:23 PM

Two motherboards resulting in 00 sounds pretty conclusive to me. Trying the cpu in another motherboard may lead to further issues.
13900KS / 8000 CAS36 / ROG APEX Z790 / ROG TUF RTX 4090
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krassyg
Level 7
In response to Silent_Scone

‎07-15-2022 04:43 AM

It definitely isn't the heatsink; it makes perfect contact with the cpu and I tightened the screws by hand very carefully. Started the RMA with Intel; will report back after I get the replacement. The crazy thing is that the system was working fine with XMP-1 profile; it stopped working when I tested XMP-2. I though XMP was supposed to prevent stuff like that.
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ahfoo
Level 13

‎07-15-2022 06:26 AM

If you rule out the the CPU the fault of the problems. Removing all the ram you have and just insert a single memory ram module to kick start the system.
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