am5 motherboard

  1. Ryzen 9 9900X Code 00 No POST + AM5 CPU Substrate Bump: What It Means

    A Reddit user reported on June 20, 2026, that a Ryzen 9 9900X processor in an MSI MAG X870E Tomahawk WiFi system failed with a Code 00 POST error and showed a visible bump on the underside of the AM5 package. The claim is still a single-user failure report, not a proven defect pattern. But it...
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    • am5 motherboard cpu code 00 pbo settings ryzen 9 9900x
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    • Forum: Windows News