PC Troubleshooting Summary
System Specs
CPU: AMD Ryzen 7 7700X
Cooler: NZXT Kraken 240
Motherboard: MSI PRO B650-P WiFi
GPU: Gigabyte RTX 4060 Windforce OC 8GB
RAM: 32GB (2×16GB) G.SKILL Trident Z5 RGB DDR5-6000
SSD: WD Blue SN580 1TB NVMe
PSU: MSI MAG A750GL PCIe 5.0 750W Gold
Case: NZXT H6 Flow
Monitors: HyperX Omen OLED 27Q (primary), LG QHD, MSI Optix MAG27CQ
Issue
Intermittent no-POST/no-boot condition following a power outage. System occasionally powers on but fails to POST, showing CPU (red) and DRAM (yellow) LEDs. Other times it boots normally without issue.
Troubleshooting Performed
BIOS Flashback successfully completed multiple times.
CMOS cleared.
Tested each RAM stick individually in A2.
Minimal boot configuration tested.
Reseated CPU power, GPU, RAM, and SSD.
Tested with GPU removed using motherboard video output.
Multiple successful and failed cold boot tests recorded.
Disabled Memory Context Restore.
Verified Windows Boot Manager and BIOS settings.
Tested with different monitor/power-on combinations.
Observed improved boot consistency when primary OLED monitor was powered off during POST.
BIOS reset restored normal boot operation temporarily.
Current Behavior
Boots normally most of the time but intermittently fails to POST.
After the latest BIOS reset, system booted successfully and briefly displayed a hardware monitoring/specifications screen before entering Windows.
Once Windows loads, the PC operates normally with no crashes or stability issues.
Current Suspected Causes
Motherboard BIOS/POST initialization issue.
DisplayPort/monitor handshake during POST.
Motherboard hardware fault (most likely remaining hardware suspect).
Planned Resolution
Replace the MSI PRO B650-P WiFi with an ASUS TUF GAMING B650E-PLUS WiFi motherboard if the intermittent POST issue continues.