A user reported a hardware failure involving an Asus ROG Crosshair X670E Hero motherboard and an AMD Ryzen 9 9950X3D processor. The system failed to boot after the user installed the CPU and activated an Asus memory profile for 64 GB of DDR5 RAM in the BIOS.

Following the failed boot, the motherboard displayed a diagnostic code of 00. Upon inspection, the processor showed two brown marks on its casing, suggesting potential electrical damage or overheating. The user noted that no manual voltage adjustments or overclocking were applied.

The user attempted to troubleshoot by reinstalling a previously functional Ryzen 5 8500G processor. The system failed to start again, showing a diagnostic code of 4D. The user confirmed that the socket pins appeared undamaged and the motherboard BIOS was updated to the latest version.

The Ryzen 9 9950X3D had previously operated correctly on an ASRock X670E Taichi Carrara motherboard. The exact cause of the failure remains unconfirmed, as the status of the processors and the motherboard's power delivery system requires professional diagnostic testing.