Ryzen 9000 “00 code” and CPU/DRAM LED cases continue on ASRock AM5 motherboards
Five fresh user reports that describe Ryzen 9000 CPUs dying or refusing to POST on ASRock AM5 motherboards. The cases span Ryzen 5 9600X, Ryzen 7 9700X (two reports), Ryzen 7 9800X3D, and Ryzen 9 9950X3D across B850 and X870 series boards.
Across the threads on Reddit, the common symptom is a system that powers on but never reaches POST, with CPU and DRAM debug lights staying lit or a “00” postcode on the board. One report also states that flashing BIOS 4.03 via BIOS Flashback did not restore boot functionality.
We summarized each of the five cases, which were all shared on Reddit yesterday alone.
- Ryzen 5 9600X + B850 Pro-A: System built around May 2025. The user reports a later no-POST state with CPU and DRAM LEDs solid red, and no change after BIOS Flashback to 4.03, CMOS clearing, and swapping RAM kits.
- Ryzen 7 9700X + B850M-X: Redditor reports a sudden no-POST boot with CPU and DRAM debug LEDs, then reports the same outcome after troubleshooting and a motherboard swap to a Gigabyte board, leading to a CPU RMA.
- Ryzen 7 9700X + X870 Pro RS: Redditor reports a stable system from August 2025 until an unexpected power-off on January 23, 2026, followed by a persistent CPU debug LED and no boot. The post also states no overclocking and no EXPO use.
- Ryzen 7 9800X3D + X870E Taichi: Redditor reports a full system freeze, followed by a restart into postcode “00,” with no visible CPU damage and no recovery after RAM swaps. The post mentions warranty claims for both CPU and board.
- Ryzen 9 9950X3D + X870E Nova WiFi: Redditor reports postcode “00,” no access to BIOS, and no change after CMOS clearing and BIOS Flashback. The post also mentions the failure occurring after sleep and an RMA filed with AMD and ASRock.
Source: Reddit
These are user reports, not confirmed failure investigations, and none of the threads include proof that this really did happen. But to be honest, I’m not sure how users could share a photo of a broken CPU while it’s in the powered-on system. From my understanding, there’s no visible damage on the CPU like in the first cases from last year.
ASRock is silent
Seeing more of these reports, we reached out to ASRock for comment and an official statement. We also asked for guidance on how users should configure AM5 systems to reduce the risk of similar failures. If ASRock responds, we will publish an update.
What is harder to understand is the lack of clear public communication so far from either ASRock or AMD. ASUS acknowledged similar reports after only a few cases and said an investigation was already underway. Right now, it is not possible to confirm whether these incidents share a single cause, or whether the failures point to a CPU-side issue or motherboard configuration and firmware behavior from board partners.
Source: Reddit , Reddit , Reddit , Reddit , Reddit
