MSI Z790 Tomahawk DDR4 Wi-Fi
i7-13700F, contact frame
Thermalright FC140
DDR4 2400, 8GB modules x4 (Kingston, Silicon Power, Micron OEM)
PNY RTX 3060
HP PCIe 3.0 x4 512GB NVMe
600W Cooler Master PSU
I get a yellow light in the EZ Debug area, at the DRAM position. If I push reset the EZ Debug LEDs will switch between yellow (DRAM) and red (CPU), for a few seconds, then stops on yellow (DRAM). No beeps, no video output. If I remove memory I get a long beep.
I tested with 1 module at a time, trying different modules from among the 4 that I have in the DIMMA2 position, per silkscreen and instructions in the manual (to be populated first). No change with different module.
Pressing CMOS reset button shuts off the system, I keep it pressed for 15 seconds. No change.
I flashed the latest BIOS from a USB flash drive using the BIOS flash button on the back per instructions in the manual. The LED indicator lit, blinked, then turned off after a few seconds. No change.
Memory is known good from my previous system, GPU is known good from my previous system, NVMe is known good from my previous system, PSU is known good from my previous system, CPU cooler is from my previous system.
Ideas?