Error 55 after 13900k install

[karloy]

I am wondering if anyone experienced a similar issue. I have an error memory issue with 2x 16 DDR5 and Strix z790-E. (A2, B2). The memory works fine when using the B2 alone (either of the sticks). I did the Bios upgrade, including the beta update, and ME driver updates. (https://www.computerbase.de/forum/threads/i9-13900k-auf-asus-z690-f-bios-2103-kein-xmp-memory-post.2...)

This is what a tried - 55 memory issue here means it is with the sticks in A2/B2, B2 alone always works.

• z690-F strix + 13900k - 55 memory issue
  
• Replacement strix z690-F + 13900k - works, but not stable (BSDO, MemTest86 errors), then permanent 55 memory issue
  
• Replacement strix z790-E + 13900k - 55 memory issue
  
• Replacement memory - (from crucial 4800 to G.SKILL) - 55 memory issue
  
• Replaced 13900k with 12900k - no issue
  
• Replaced 13900k with new 13900k - 55 memory issue
  

Anyone had a similar experience?

[AS185]

Hey there,

I presume that you downloaded the BIOS file from Asuses website? Did you get any errors while updating the BIOS?

[Luis00014]

Lots of people are reporting these memory problems, including myself, with the i9 13900k cpu + Asus Z690 and Z790 mobos. It is a shame as i wanted to upgrade my rig to the best i could buy but so far I have tried 3 brand new Asus Z790 mobos, 2 i9 13900k cpus and with 4 different sets of ram but keep getting memory errors.

I am not new building my own pcs, and this is the first time I have had these many problems with mobos and/or cpus.

This has been happening for months now. I don't understand why Asus hasn't said or done anything about it.

[arabesc]

I've had the same issue.
I have an ASUS Z690 Formula m/b, a 12900K CPU and a G.Skill Trident Z5 Memory 2x16 GB memory kit. The system had worked without issues. I've upgraded the CPU to a 13900KS and had got that 55 memory error. Only one RAM stick had worked in a bank B, the second stick in a bank A caused the error during the POST. I had loosened and tightened a CPU cooler, it didn't affect anything. I had decided to check the old 12900K then and the system had worked ok with it. That was a good sign meaning the m/b isn't damaged. I've took the new 13900KS, cleared its contact pad with a cotton swab and isopropyl, installed it to the m/b and it works, the system passes the POST with the two RAM sticks.
So, my thoughts on that. Either the CPU contact pads are oxidized and need to be cleared a bit (someone stole the gold plating) or there is some little backlash between the CPU contact pads and the m/b pins. I would suggest to clear the CPU contact pad before install, slightly and carefully (!) move the CPU in a socket from side to side during install for a better contact between the CPU pads and the m/b pins.