Your motherboard power pins behaving oddly?
Your motherboard power pins behaving oddly?
You're encountering a setup issue with your PC. The system briefly powers on, then shuts down automatically. While it was recently replaced, you're seeing signs of hardware or power problems. The red light indicates CPU issues, the yellow light suggests RAM problems, and the flashing boot light points to a possible startup glitch. The inability to power on again without resetting CMOS further hints at a deeper configuration issue.
Reboots are typical during memory training, but the system should resume operation instead of shutting down. Initially, I considered using a different power supply unit. It seems the motherboard experienced unstable voltage and temporarily halted the computer to avoid harm. Another possibility is a BIOS error—updating the BIOS with the latest version might resolve the problem. Good luck!
First, verify your motherboard supports the latest BIOS for Ryzen 9000 series; otherwise, it may not boot. Check that the CPU is properly seated and there are no bent pins in the socket. RAM modules should be placed in slots A2/B2. Start with a single RAM stick to test. After updating the BIOS, reset CMOS and attempt to boot again. This issue is likely due to BIOS incompatibility, so upgrade to the newest version with AGESA support for the 9000 series before retrying.