One RAM stick failing after rebuild.
System Specs:
- Motherboard: MSI B650M
- CPU: AMD Ryzen 5 9600X
- RAM: CORSAIR Vengeance 16GB RAM X2 Note: Bought as two individual 16GB packs, not a matched kit.
I recently rebuilt my PC. Before the rebuild, both RAM sticks worked perfectly together with XMP enabled at 5200 MT/s (base JEDEC was 4800 i think dont remember). After the rebuild, the system refuses to post when both sticks are installed, and my motherboard throws the Red CPU and Yellow DRAM EZ Debug lights.
I isolated the issue by testing the sticks individually in the primary memory slot:
- Stick A alone in primary slot: Boots perfectly.
- Stick B alone in primary slot: Fails to boot (Red CPU / Yellow DRAM lights stay on).
- Stick A + Stick B together: Fails to boot.
i waited about 2-3 minutes before calling it failed attempt. ( should i wait for 20-30 mins?)
Because Stick A works flawlessly in the primary slot, I am assuming the motherboard traces, CPU pins, and the integrated memory controller are fine. I am aware that mixing two individual DDR5 packs isn't ideal due to differing PMICs/ICs, but they worked together without issue prior to this rebuild.
Has anyone experienced a single stick failing to train like this after a teardown/rebuild? Is Stick B dead, or is it stuck on a corrupted training profile?