The PSU fans rotate for 1 to 2 seconds prior to shutting down.
The PSU fans rotate for 1 to 2 seconds prior to shutting down.
Hello Everyone,
This is my initial attempt at posting here, and I’m not familiar with this particular matter before. A bit of context: two years ago I purchased a new PSU (Antec HCP 80+ Platinum 1000W), which I had intended to pair with a 3080 at that time. Because of high demand and limited availability, prices soared rapidly—until now. I finally acquired a MSI 3080 GPU. I decided to take it apart and inspect the PSU I bought two years ago, along with this brand new GPU. After installing everything and turning on the power, the PSU fans started spinning for a brief moment before shutting off completely. At that point, neither the GPU nor CPU fans were running, and the RAM LEDs remained inactive.
I noticed the motherboard was receiving power early on, as the LED lights on the board lit up before I even pressed the power button. I re-seated the wiring several times to ensure proper connection, cleaned the PC case thoroughly, removed the RAM, and even tried using a single RAM stick. The PSU passed the paperclip test, and the fans operated normally. When I connected my old PSU (BeQuiet 80+ Gold 1000W) back in, everything functioned perfectly. I examined all the cables gently to check for disconnections; one PCIE wire was loose and came out immediately, so I set that aside. However, using my previous PSU with the new GPU caused the same problem.
I’ve also tested the new PSU with an older GPU (GTX 1080) and encountered the same issue. After replacing the old PSU, my system ran smoothly. I inspected all connections carefully, gently tugging them to see if they disconnected. One PCIE wire was loose, but it didn’t affect performance.
Current setup:
- Motherboard: Rog Strix B-550 E Gaming
- CPU: AMD Ryzen 7 5800X
- GPU: MSI GeForce RTX 3080 Gaming Z Trio 10GB LHR
- RAM: Corsair Vengeance 4x8 3200Mhz
- PSU: Antec HCP 80+ Platinum 1000W
I’m running out of ideas and would really appreciate any suggestions.
It definitely seems like the antec is faulty right out of the box. There are numerous models available, but when I was evaluating power supplies, all the antec platinum ones mentioned a 10-year warranty. In the worst scenario, you should be able to buy cables for the Bequiet power supply. Also, as long as you use a voltage meter to confirm everything is correct, you can rely on cables from other power supplies or create your own setup. It’s just not something that’s commonly recommended since many people lack the knowledge to properly test components with a multimeter.
You're experiencing a recurring issue with your ASUS motherboard. It frequently powers on and off briefly before resuming normal operation, especially after power loss. Adjusting the PSU power supply seems to resolve this. When you restart the PC, the CPU and GPU fans remain inactive. Your case fans likely still function. If the PSU fan fails to activate, it might be typical behavior, similar to the low-power or idle states seen in GPUs. I don't see specific guidance in the Antec manual for your PSU, but it should respond when temperatures rise.
Case fans remain inactive even after waiting several minutes; the PC fails to restart. PSU fans spin briefly for 1-2 seconds before shutting down, but pressing the power button repeatedly yields no effect. I must switch off and then on the PSU, only for it to restart and spin again for 1-2 seconds before turning off once more.
Well, I'm pulling back on my words, just like I mentioned support is coming back to me with a replacement for my faulty PSU. Thanks for the assistance, guys!
@RippersGlory1
It's better to come later than not at all, isn't it? Fingers crossed the new fix works for you.