ROG Strix Z790-A Gaming Wifi II DRAM B2 not working

[DarikC]

I just finished a new build using the Asus Rog STrix Z790-A Gaming Wifi II motherboard.  Initially, couldn't get it to post, the yellow DRAM light was continuously on.  After tons of work updating the BIOS and experimenting with the DRAM, looks like slot B2 isn't working.  I can get the MB to post with a single DRAM in slot A2, and BIOS settings look normal, but when I put the second DRAM in slot B2, I get a red to yellow LED cycle with no post.  A single DRAM in B2 results in no post and solid yellow LED.  I've read the posts here, and checked the CPU and the CPU socket pins, they look fine, and I've ensured the cooler is not too tight.  Normally people seem to have issues with the A2 slot, but for me its B2.  Any ideas?  Thanks for any help...

[DarikC]

Also, forgot to mention, I'm using G-Skill DDR5-7200 16G sticks, I did find the model on the compatibility list.

[Jiaszzz_ROG]

Hello, @DarikC 

Thank you for reaching out to us.
Could you please provide the current CPU and memory part number and confirm whether it's 2*8GB or 2*16GB of the same kit?
Based on your description and the ROG STRIX Z790-A GAMING WIFI II QVL, it supports two modules of "G-Skill DDR5-7200 16G," as below:

Additionally, we advise you to refer to the instructions in the "purchasing and installation guide.":

Ensure that all memory modules are from the same validated memory kit. Do not mix DIMMs from different memory kits—even if they are the same brand and model (e.g., two DIMMs each from two different memory kits). Mixing and matching DIMMs can result in a failure to boot and compatibility issues.

Furthermore, could you please confirm your current BIOS version?
If you haven't updated to the latest version 1102 released on March 19, 2024, consider updating it and clearing CMOS before booting into the default BIOS and checking again.

Thank you.

[DarikC]

Thanks for responding - I'm using an i7-14700K CPU, and the memory is two 16GB sticks of model G-Skill F5-7200J3445G16GX2-TZ5RK.  I updated the BIOS using flashback to the 1102 version, and cleared CMOS during my own troubleshooting, no improvement.

[Jiaszzz_ROG]

Hello, @DarikC 

Due to the ongoing local holidays in our area, my response time may experience delays.
I apologize for any inconvenience the delayed replies may have caused.

Thank you for providing clarification.
Could you please confirm whether it's the installation of a specific RAM module in the B2 slot that causes the DRAM Q-LED indicator to light up and prevent booting, or if any RAM module from the kit, once installed in the B2 slot, results in this situation?
If you're unable to cross-test with another kit of RAM, and considering you've recently purchased the motherboard, we recommend promptly reaching out to the dealer to report this issue and seek possible assistance.

Thank you.