RAM compatibility
RAM compatibility
The issues stem from compatibility between the RAM speed and the motherboard's XMP support settings. The problem likely lies with either the RAM sticks themselves or the motherboard's capabilities. Since your 2400MHz RAM works fine at 3200MHz, it suggests the motherboard may not fully support higher speeds at that frequency. The fact that disabling XMP resolves the issue points to a configuration mismatch rather than hardware failure. The GPU was previously unaffected, indicating the problem is related to memory settings or board limitations. Upgrading to a 3600MHz RAM stick would be necessary if the motherboard supports it.
Have you checked if your device's BIOS has been refreshed? Updating the B450M could enhance XMP RAM performance.
I revised it. After reviewing your text, I wonder if the BIOS update could have caused the issue.