New components are present, RAM activates, CPU fan remains still, MB debug indicators fail to illuminate.
New components are present, RAM activates, CPU fan remains still, MB debug indicators fail to illuminate.
Hi everyone, I really appreciate any assistance you can offer. Here’s what I’ve documented and attempted so far:
Hardware:
- Motherboard: GIGABYTE B650M GAMING PLUS WIFI AM5
- CPU: AMD Ryzen 7 7700X
- GPU: EVGA RTX 3060 Ti XC Gaming
- RAM: CORSAIR Vengeance RGB 32GB DDR5 6000MHz CL36
- Power Supply: CORSAIR RM850x Fully Modular
- Cooler: Cooler Master Hyper 212 Spectrum
All components are brand new from Canada Computers.
Connections:
- Motherboard, CPU, RAM, PSU, and CPU cooler are all new.
- Connected cables: CPU 2x4 (on board), MB 2x12 (not on board), CPU fan (on board), CPU fan RGB, MB 2x9 and 2x5 power from PSU, CPU 2x4 on PSU.
Symptoms observed:
- When I power on the PSU, the CPU cooler activates, then shuts off immediately. No fan noise.
- Shorting power pins causes the RAM RGB to light up and stay illuminated.
- CPU fan fails to spin or illuminate.
- CPU debug LEDs remain off.
- No POST message or display appears.
What I’ve tried:
- Re-seated CPU three times
- Re-seated RAM twice
- Re-seated all cables listed above multiple times
- Reseated PSU cable to the power outlet five times
- Removed CPU cooler RGB
- Disconnected CMOS battery
- Jumped CMOS clear pins
- Jumped PSU (it works with fan spinning)
- Used different power outlets
- Only one RAM stick per slot (tried both separately)
- Powered up without RAM – no lights or beeps.
Important notes:
- I don’t have any spare parts available.
- This is my first attempt with AM5 components; previous AM4 units didn’t work.
- I don’t have a multimeter.
- I’m currently at a complete standstill and need guidance.
Thank you all for your help!
Do you still possess your previous PSU? Checking familiar working gear is always wise. I noticed you mentioned the AM4 components didn't function, but that doesn't cover the PSU entirely, so I wanted to inquire. Otherwise, it seems the part you received might be defective or incompatible. Would it help to perform a visual check of your CPU socket, contacts, and RAM slots to look for any issues? Thanks for the update—I'm excited about your upcoming AM5 upgrade and a bit worried right now 😅
I was going to repeat the same point, but the AM5 features a PGA which means a pin might get harmed or a component could fail.
The previous power supply unit was the reason some components failed. I visited Canada Computers during lunch, tired of fixing the last system and excited about the new one. They just needed a quick BIOS flash, and it worked perfectly.