System shuts down and fails to restart (second occurrence)
System shuts down and fails to restart (second occurrence)
Your computer shut down abruptly, seemingly cut off from power, yet the RGB illumination remained active. When you attempted to restart it, no response occurred. This incident occurred roughly a month ago. Your previous motherboard had damaged 12V EPS connections, suggesting the PSU's SCP might be activated, blocking its operation. This time you didn't verify the root cause. Your system specifications are:
- CPU: AMD Ryzen 7 2700X
- Previous motherboard: Gigabyte X470 Aorus Gaming 5
- New motherboard: ROG Strix X570-F Gaming
- RAM: T-force Vulcan TUF Gaming Aliiance 32GB 3600MHz (operating at 3066MHz)
- Storage: Adata SX8200 256GB + Samsung 860 Evo 500GB + TForce Delta Max 1TB + two 2TB Barracuda Compute drives
- GPU: Colorful iGame RTX 2070 Super Advanced OC
- PSU: Seasonic Focus+ Gold 750W
Recent changes before the first motherboard failure included:
- Installing a 12V 4-pin RGB strip (400mm)
- Adding two Phanteks Halos for RGB lighting on fans
- Upgrading RAM from 2x16GB Crucial Ballistix Sport LT 2666MHz to the new 32GB TUF model at 3066MHz
- Configuring RAM speed to 3066MHz (with limits at 19-19-19-39)
Possible causes:
- Faulty PSU
- Two motherboards failing within a month (coincidence?)
- RAM configuration issue
- RGB lighting modification causing instability
- Factory defect in the motherboard
Your intuition is correct—checking these points could clarify what happened.
Based on what I see, it seems the PSU isn’t likely the issue, the RAM shouldn’t cause problems, and the RGB shouldn’t be the problem either. The most probable cause is faulty mobos or a defective CPU—unlikely if it’s a Seasonic PSU, which should be solid. If the problem persists, check the motherboard mounts and standoffs; they might be misaligned or exposed. Also, verify the power pins by shorting them to see if the board powers on. It could also be a faulty button.
I verified the spacing and confirmed the case is correctly aligned. The unit is a Phanteks Enthoo Evolv TG, fully painted, which suggests the motherboard won’t short if it contacts the case. I also attempted to use a screwdriver to connect the power button pin, but no effect occurred. Additionally, I suspect it isn’t the power button because the system shut down unexpectedly during use, similar to the previous model.
Consider sending the motherboard in for repair with ASUS. It should be covered under warranty if it was new, and they offer excellent service worldwide. If they can diagnose the issue by examining the board, it should provide insight into the problem. Also, do you have your PC connected to an external USB port?