Similar problem here, CPU debug light turns on and cannot boot with:
- Ryzen 5 1600;
- MSI B-350 Tomahawk;
- GeIL Evo Potenza RAM, 3000MHz DDR-4 3000MHz (PC4-24000), 2x8GB (not considered as compatible by MSI for B-350 MoBo)
- GTX 1050 Ti.
Thought it was MoBo at first, got it RMA, but had same...