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I replaced the fan on my FX-8350 and now it won't boot.

I replaced the CPU fan on my FX-8350 with the coolermaster 212 EVO and now my computer doesn't boot. It lights up and all, but the screen stays blank. I used to have it working, but not since I replaced the fan. I thought that the CPU could have been damaged so I got a replacement for it, but it still doesn't boot.
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  1. Worm20 said:
    I replaced the CPU fan on my FX-8350 with the coolermaster 212 EVO and now my computer doesn't boot. It lights up and all, but the screen stays blank. I used to have it working, but not since I replaced the fan. I thought that the CPU could have been damaged so I got a replacement for it, but it still doesn't boot.


    Have you tried booting up the PC without the fan plugged in?
  2. Can you get into BIOS?
    I had the same problem when I first got a new CPU fan, but then I realized that the BIOS was set that below a certain minimum fan speed it wouldnt boot. The fix was simple, just lower the minimum allowable fan speed and the PC should boot.
  3. Best answer
    I think that perhaps you damaged something on your motherboard or video card with static. It's extremely rare for a CPU to become damaged for any reason. They're completely encased and very robust. I have an FX-8350 myself and I did also change the fan on it. I didn't have any issues at all. I really think that it's your motherboard causing the problem.
  4. amirp said:
    Can you get into BIOS?
    I had the same problem when I first got a new CPU fan, but then I realized that the BIOS was set that below a certain minimum fan speed it wouldnt boot. The fix was simple, just lower the minimum allowable fan speed and the PC should boot.


    I can't get into the bios, the screen stays black and nothing externally plugged in lights up.
  5. Avro Arrow said:
    I think that perhaps you damaged something on your motherboard or video card with static. It's extremely rare for a CPU to become damaged for any reason. They're completely encased and very robust. I have an FX-8350 myself and I did also change the fan on it. I didn't have any issues at all. I really think that it's your motherboard causing the problem.


    I have the same motherboard as you, how easy is it to brake?
  6. ThatOneComputerMan said:
    Worm20 said:
    I replaced the CPU fan on my FX-8350 with the coolermaster 212 EVO and now my computer doesn't boot. It lights up and all, but the screen stays blank. I used to have it working, but not since I replaced the fan. I thought that the CPU could have been damaged so I got a replacement for it, but it still doesn't boot.


    Have you tried booting up the PC without the fan plugged in?



    Yes, as well as trying all different components plugged in and u plugged.
  7. amirp said:
    Can you get into BIOS?
    I had the same problem when I first got a new CPU fan, but then I realized that the BIOS was set that below a certain minimum fan speed it wouldnt boot. The fix was simple, just lower the minimum allowable fan speed and the PC should boot.


    No bios, the screens stay black.
  8. Worm20 said:
    Avro Arrow said:
    I think that perhaps you damaged something on your motherboard or video card with static. It's extremely rare for a CPU to become damaged for any reason. They're completely encased and very robust. I have an FX-8350 myself and I did also change the fan on it. I didn't have any issues at all. I really think that it's your motherboard causing the problem.


    I have the same motherboard as you, how easy is it to brake?


    I'm honestly not sure. I personally have had mine for around 2 years and I've changed the CPU on it from a Phenom II X4 965 to an FX-8350 and my twin XFX Radeon HD 4870s to twin Gigabyte Radeon HD 7970 after trying out a couple of HD 7870XT's. Mind you, I've been building PCs for 25 years so I can do it with my eyes closed. There may be some small thing that happened that you're not even aware of. It's like when a car won't start. You may have changed something on it recently and that may be the problem or the problem maybe something completely unrelated and difficult to find. All I know is that the odds are severely stacked against the CPU being damaged. I had an old Intel Core 2 Duo 1.8GHz left loose in a box in the basement for years. I found it, dusted it off, dropped it into a socket 775 mobo and the thing fired right up with no problems. These are extremely durable parts that almost never fail unless a component that supports it fails first (ie - cpu fan, psu, motherboard voltage regulator). Remember that these chips are laser-etched and while the tight tolerances cause binning of CPUs, the actual percentage that are unusable is beyond extremely low. You might be looking at one or two out of 5,000 CPUs.
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