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

[krassyg]

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?

[RedSector73]

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

[Silent Scone@ROG]

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

[krassyg]

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.

[Silent Scone@ROG]

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.

[RedSector73]

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.

[Silent Scone@ROG]

Two motherboards resulting in 00 sounds pretty conclusive to me. Trying the cpu in another motherboard may lead to further issues.

[krassyg]

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.

[ahfoo]

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.