z690 hero cannot regenize RAM at A1 & A2 ram slots - QCODE 55

[yoel100]

Hey all,
My MB shows QCODE 55 if I put the RAM in A1 or A2 slot, in B1 and B2 no error.
if I reseat the CPU the error is gone then come back after the same time.

MB is not part of the defective z690 hero cap issue - confirmed via the Asus site and by visual check of the cap.
Tried to clean CPU from thermal paste, reseat the CPU, reseat RAM - not working ):
Also, check for bent pins in the CPU socket but none were seen.
RAM appears in the QVL list ( corsair CMT32GX5M2X5600C36)
Tried with XMP on and off - same result.

the other issue is that when the system did succeed to boot it takes a lot of time to boot - about 2 minutes seems because of the POST check. maybe there is a setting to turn off the post check that takes a lot of time?

any other suggestions before RMA?

System details:
CPU: Intel i9 12900k
MB: Asus ROG MAXIMUS Z690 Hero
RAM: Corsair DOMINATOR PLATINUM RGB DDR5 32GB (2x16GB) 5600MHz C36
SSD: Samsung 970 Evo 1 TB
Power supply: EVGA 1600 T2
OS: Windows 11 Pro

[Ribellu]

Hi,

I had the same experience with my old mobo, some pins were spread apart and slightly crushed, at first I didn't notice it, then I examined all the pins in depth with a magnifying glass and good lighting and bingo . Then with a needle I straightened them as best I could and I got my ram slots back.

Yet to the naked eye all the pins looked correct.

[yoel100]

All mb pins seems ok

[ahfoo]

Try only insert RAM in A1 and A. If no issue, remove A1 and A2 pair and insert another RAM set in B1 and B2. If there is no issue, Put back all 4 slot of ram and test it out. If there is error, I supposed a BIOS issue.
PS: You need to test all this with XMP disable and XMP profile 1. I do not think hardware issue but more on bios issue. That my opinion.

[DragDay7]

Hi,

How about follow the manual?



You're not supposed to use A1+A2 or B1+B2 with dual channel sticks.

[ahfoo]

Hi,

How about follow the manual?



You're not supposed to use A1+A2 or B1+B2 with dual channel sticks.

Hi Mate, I am running 4 stick running with no issue.

[DragDay7]

Hi ahfoo,

I was referring to OPs setup - he uses two sticks and he should populate A2+B2 only.

[yoel100]

i did tried to poplate A2 and b2 as the manual referring, but then qcode 55 comes in.

Also qcode 55 comes approximately 1 day after reseating the RAM or cpu meaning the pc working for whole day just fine, then suddenly after restart or turn on after the system was shut down - qcode 55 comes in

make me believe its mb/bios issue related and not bent pins or something like that

[Legolas]

please clean the memory modules fingers.
I suggest testing each memory individually on A2.
If one of the memory flag code 55, this module is the culprit and you need to replace the memory kit
If both pass, please clean the B2 with alcohol and then try to install memory on B2 again.
Update latest bios when install on A2
If it still persists, clear CMOS with battery and then try installing on A2 and B2 again
If it works, please enable XMP and make sure the timing is 36-36-36-76 with 1.25V. If it is Q-code 55, adjust the DRAM voltage higher to 1.26V or higher.
If you really want to see if it is memory, install each memory on A2 and run Memtest86 and repeat it on the other memory module. If one of the memory has errors, RMA the memory.
Hope that helps.

[ahfoo]

To add on, please check all the RAM module to see if there is any bad connection point.