7800x3d with 6000 mhz – New build pc that does not post

Troubleshooting a Non-Posting New PC Build: Addressing Compatibility and Configuration Challenges

Building a new PC can be an exciting experience, but it comes with its fair share of troubleshooting, especially when encountering boot issues. In this guide, we will walk through common problems and solutions faced by users when their recently assembled systems fail to POST (Power-On Self-Test), focusing on a scenario involving a high-performance CPU and memory configuration.

Case Overview:

Components Used:
CPU: AMD Ryzen 7 7800X3D
RAM: 2x 16GB Corsair CMK32 DDR5-6000 MHz
Motherboard: MSI B650 Gaming Plus WiFi
Graphics Card: RTX 3060 Ti Twin X2
Storage: 2TB M.2 SSD
Power Supply: 750W Gold-rated PSU

Symptoms:

The system powers on but fails to boot.
LED indicators show the CPU light in red and DRAM in yellow.
BIOS access is unavailable.
Attempted BIOS updates via USB did not resolve the issue.
Re-seating components and reassembling the system did not lead to success.

Possible Causes and Solutions:

Memory Compatibility and XMP Settings
High-Speed RAM: DDR5-6000 MHz modules can sometimes cause boot issues if the motherboard or CPU struggles with initial boot at these speeds.
Solution:
- Clear CMOS to reset BIOS settings to default.
- Manually reduce DRAM frequency to a lower, more stable setting (e.g., DDR5-4800 or DDR5-5200) via BIOS or by resetting CMOS.
- If unable to access BIOS, attempt a BIOS flashback or recovery procedure to update or reinstall firmware that may improve support.
BIOS Version and Firmware
Motherboard BIOS: Ensure the BIOS is up-to-date to support the latest CPUs and memory profiles.
Solution:
- Use another compatible CPU to perform a BIOS update if necessary.
- If BIOS updating via USB doesn’t work, verify the procedure and the integrity of the BIOS file.
- Contact MSI support for assistance with BIOS recovery or to confirm if a specific BIOS version is required for your CPU.
CPU and Memory Seating
Proper Installation: Double-check that the CPU is correctly seated and that no pins are bent.
RAM Modules: Test each RAM module individually in different slots