madrov

Hi, I’m experiencing random instant reboots on an Unraid server and I’m running out of things to rule out. Hardware Ryzen 5 5600G (APU) Gigabyte B450 AORUS M BIOS updated recently (post-2023), Optimized Defaults 32 GB DDR4 (Memtest86+ = 0 errors) WD Blue SN570 NVMe No GPU, no VMs, no encoding Two different PSUs tested (including Corsair CX550) → same result Symptoms Instant reboot, no freeze, no shutdown sequence Motherboard LEDs don’t even turn off Happens randomly (sometimes ~10 minutes) No logs at all, not even on a remote syslog server Only normal boot logs before the crash What I’ve tried BIOS update + defaults Global C-States disabled iGPU enabled with fixed UMA PSU (tested 2) and RAM ruled out At this point it looks like a hardware-level reset (VRM or power delivery), possibly related to running a Ryzen 5000G APU on a B450 board. If anyone has seen similar behavior or resolved it, I’d appreciate the feedback. Thanks.