G.Skill Trident Z Dual Channel not working on i9 and Z390

[PzSniper]

On 11th Jan after a week all pieces has arrived but ...got a big big problem... Hoping on your time and support, here's what happened.



i assembled my new pc, and here are the specs

INTEL CORE i9-9900K

ASUS ROG STRIX Z390-F GAMING

ASUS ROG STRIX RTX2070S A8G GAMING

PSU COOLER MASTER SILENT PRO GOLD 1000W



...but i can use ONLY 1 DIMM of my G.Skill Trident Z F4-3200C16Dm DDR4-3200MHz CL16-18-18-38 1.35V 16GB (2x8GB)

1 DIMM works B2 both of them if interchanged.

2 DIMM doesn't work in any combination b2 a2 or b1 a1...system start with MEM OK test, flash cpu red, flash yellow dimm led, reboot few times and then stop with 2 leds on solid yellow .



I dunno what to try after 5 hrs... already updated ASUS BIOS of ROG STRIX z390-F to the latest 1401 dated 11 Dec. 2019



ofc ram is listen on QVL for this mobo....



Please advice

 

[Mr.Scott]

RMA the board.

 

[notarat]

Reseat the CPU and, if that doesn't work, definitely RMA the board.

 

[BugFreak]

I would definitely say outdated BIOS first but since you already updated that I'm with the others to RMA the board.

 

[trents]

Check the socket for bent pins. If no issues there, RMA the board. You've done all the necessary troubleshooting to eliminate other possibilities.