This device isn't powering up as expected.
This device isn't powering up as expected.
Details: PowerColor Hellhound AMD Radeon™ RX 7900 XTX 24GB GDDR6 AMD Ryzen™ 7 7800X3D gaming processor CORSAIR Vengeance DDR5 32GB kit 6000MHz CL30 (30-36-36-76) WD_BLACK SN770 NVMe™ SSD 1TB ROG STRIX B650E-F GAMING WIFI Fractal Design Ion+ 2 Platinum 860W Fractal Design North Black Mesh Fractal Design Aspect 14 PWM + 12 PWM Thermalright Peerless Assassin 120 SE Issue: System fails to start. Motherboard lights up when power is applied, but fans remain off and nothing responds. No reaction to pressing the power button. Steps tried so far: - Verified PSU is on and connected - All cables securely fastened to PSU - Headers firmly attached to motherboard - RAM placed in correct slots Troubleshooting steps: - Delayed boot after power-on (typical for 7-series) - Successfully updated BIOS via latest support page (v1616) - Disconnected CMOS and cleared it - Tried manual power-on by bypassing the power switch on motherboard edit* - Booted using integrated GPU (no dedicated GPU) - Used one RAM stick at a time - Switched PSU What comes next: - Replace RAM in correct slots - Remove motherboard from case to test boot - Inspect air cooler and CPU pins
It seems the problem lies on the 12V rail that powers the fans. The motherboard's RGB typically runs at 5V, so are the 12V EPS "CPU" connectors located at the upper left side of the board? (You only need one 8-pin connector.) Try taking out the graphics card and see if the system boots using the built-in CPU GPU. If you successfully updated the BIOS, the board functioned at least once. You've completed most of the basic checks. Before swapping parts, consider testing with just one RAM stick installed—no fans suggest a power supply issue or a faulty motherboard.
Oops, seems like the system is behaving oddly. Interface issues detected.
Thank you for your message. I verified the CPU connector by disconnecting and reconnecting both ends. I also installed the 4-pin connector for extra safety. No progress observed when booting without the GPU or with only one RAM slot (position A2 as per the manual). I’ll attempt to uninstall the PSU and let you know the outcome. Appreciate your patience, Andreas.
This setup isn't ideal as it uses the same cable for both connectors. Running the GPU through two 8-pin connectors on one cable can cause overheating and damage the connectors. It's better to use separate cables directly from the power supply for optimal performance and safety.