u/Ar-Jami

▲ 3 r/PcBuildHelp+1 crossposts

**[HELP] **

**Specs:**

- CPU: Ryzen 5 8400F (AM5)

- Motherboard: ASRock B650M pg lightning wifi

- RAM: Corsair Vengeance DDR5 6000MHz 2x16GB

- GPU: Radeon RX 9060 XT 16GB

- PSU: Attis 650R 80+ Bronze

- Cooler: Corsair iCUE Link Titan RX360

- Case: Corsair 4500X

**Background:**

This build was working perfectly before with a 6500xt gpu, stock cooler and a differentcase. I recently moved everything into a new case with a new CPU cooler and new GPU. Since then I'm getting CPU and DRAM red debug lights on the motherboard with no POST and no display output.

**What I've already tried:**

- Tested both RAM sticks individually in all 4 slots (A1, A2, B1, B2)

- Confirmed 4+4 pin CPU power cable is fully seated

- Confirmed 24-pin ATX is fully seated

- Removed GPU and tested with no GPU with a ryzen 7 7700

- Cleared CMOS three ways — battery removal, 2-pin jumper short, and rear IO button

- Checked AM5 socket pins — all look fine visually

- CPU is confirmed running — temperature rises from 24°C to 30°C on cooler display

- RAM slots look clean with no visible damage but saw a bit of dust and cleaned them.

- Same CPU and RAM worked on this exact board before

**Interesting observations:**

- CPU temperature is rising so CPU appears to be functioning

- DRAM light stays red even with NO RAM installed and also same while installed. Cant even go to bios anyhow

- Previously swapped in a Ryzen 7 7700 temporarily and it worked before but with new setup it's not working and tried with ryzen 7 7700.

- Cpu and Ram lights are on

- on my power supply there's no dedicated cpu cable. Using a 4+4 PCIe cable

**What could cause DRAM red light to stay on even with no RAM installed?**

Is this a dead motherboard? Bad memory controller?

BIOS issue? Any help appreciated, been at this for days!

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u/Ar-Jami — 16 days ago