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Help. All my fans have stopped working except the PSU fan.

707 Views 1 Reply 2 Participants Last post by  JimE
Help! All my fans have stopped working except the PSU fan.

Hi there. This year I was building a new system with the help of some of the good folks in the building subforum. My system has been working fine til just recently. The computer shut down twice yesterday for no apparent reason. I tried some things to resolve, like the Power button (30 seconds) thing, cleaned things up on my system, and it was working fine again for a few hours.

I got home from work today .. and it won't boot. So I took it off my desk, unplugged, moved to another desk, opened it up, plugged the power in, and watched what was happening. The CPU fan, back fan, and the front fan are refusing to spin (they don't start at all), but the PSU fan does. The two graphic card fans won't spin either.

My computer is clean. All the components are less than a year old, so there's no reason for any of them to be failing. I was going to take it apart and plug everything back in to see if it works, but I wanted to leave this here to see if anyone has a better idea. How could this happen out of nowhere? All the fans were spinning last night, and I was playing MGSV Phantom Pain with temps between 50-65 (depending on where I was) so I don't have temperature issues. I also had a graphics card crash last night on a really old game despite my card being bought this year. The graphics card still has the power light when I plug the mains in. Appreciate any help with this random issue :sad:

(Also, I have no spare PSU's to troubleshoot whether it's a PSU fault.)

Motherboard: Gigabyte H81M-DS2V
Processor: Intel i5 4590 3.3Ghz
Memory: DDR3 8GB
Power: 350W Corsair PSU
Graphics: Geforce GTX 750 Ti 2GB
Case: Cooler Master N200 Mid Tower Micro-ATX Chassis (Black)
OS: Windows 7 64 bit Home Premium
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Sounds like the system isn't getting enough power.

The min requirements for gpu is a 300w unit. The cpu max usage is at 84w. That doesn't leave enough power for the rest of the system. Plus, you should leave 20-25% overhead for safety.

You are likely drawing more power than that Corsair can provide and it has finally failed. Also, with the exception of the two high end, gold+ certified units, Corsair is no longer a recommended brand.

Look at a 500-550w Seasonic or other quality unit. The power supply is the most important part of the system and not a place to save money. A faulty/failed power supply can damage other hardware when it fails.
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