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CPU fan doesn't spin unless system restarted multiple times.

I have recently been having issues with my cpu fan. When i turn my computer on it doesn't spin and after a while the system just shuts itself down without warning because of this.

However, i have found a temporary solution but i need to find a permanent fix. Currently if i boot the system up multiple times (usually around 4 or 5), the fan will start to spin and there will be no problems from then on until i turn the computer on the next day where i have to go through the same process.

Do i need a new cpu fan or could it be something software, OS or BIOS related?

Thanks.

JamesMc19 has chosen the best answer to their question. View answer
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All Answers

Best Answer chosen by JamesMc19

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Solution Found

In reply to: CPU fan doesn't spin unless system restarted multiple times.

I simply had to buy a new CPU fan, thank you all for your help Happy

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Good to see you fixed it.

In reply to: Solution Found

Dafydd.

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Answer
Short on details.

In reply to: CPU fan doesn't spin unless system restarted multiple times.

Make, model, OS etc.
Last time you used canned air and thermal paste?
Dafydd.

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Details

In reply to: Short on details.

Ah yes, my apologies.

The fan came with the cpu, the cpu is an AMD fx 6300.
The motherboard is a GIGABYTE GA-970A-UD3P.
The OS is windows 10.

Im not sure how relevant all the other specs are but i'll leave them at the bottom.

The last time i used canned air was 2 days ago. I regularly use canned air but i haven't changed the thermal paste before, i have ordered some in to do so as i want to try all these options before purchasing a new heatsink.

HDD: 1TB Seagate Barracuda Hard Drive 3.5" SATA III - ST1000DM003
RAM: Ballistix Sport 8GB (2x4GB) 1600MHz CL9 DDR3
GPU: Radeon R9 270x
PSU: EVGA 500W

Please ask if there is any more information that you need.

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Still no age of the machine.

In reply to: Details

Tell how you use canned air.
Dafydd.

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More Details

In reply to: Still no age of the machine.

The computer is just over 2 years old.

I start of by spraying the fans. Starting with the cpu fan i place a key between the blades so the fan doesnt move and spray the blades and inside the heatsink itself.

Then once i have done that to all of the fans i just spray all the dust out the back of the tower.

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Good practice.

In reply to: More Details

Renewing thermal paste is cheap. That should take heat out of the equation. Another test, take the side panel off and point a fan at it.
Dafydd.

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Heat

In reply to: Good practice.

I have cleaned the computer out today; i renewed the thermal paste and used compressed air.

I have noticed a performance increase but the problem with the cpu fan still persists.

I think that it is unlikely that this is a heat issue.

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At 2 years you are in the time frame of

In reply to: More Details

BAD CAPS (google that.) It's something I can visually inspect for.

To learn more, Google that and "bad caps hard starting PC."
This hard starting is also due to failing power supplies but let's get the inspection done first.

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Bad Caps

In reply to: At 2 years you are in the time frame of

I have checked all of the capacitors and they don't appear to be faulty.

In terms of the PSU, i think that this isn't the issue either simply because the computer would have problems outside booting if it was the power supply such as randomly turning off. Although i did read something that suggests the restarting could be due to the fan needing enough power and thus needs charging a few times before it will properly spin.

I have also noticed that the fan tries to spin but appears to be getting stuck/struggles to spin.

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Did you clean the fan blades?

In reply to: Bad Caps

I fixed one where the the crud inside the fan housing stopped the blades spinning.
Dafydd.

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Cleaning the fan

In reply to: Did you clean the fan blades?

I did clean the fan blades. The could be some dust left inside the circuit of the fan but i'm being cautious of that as i don't want to try and force the fan off to clean in there.

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As Bob said it could be PSU.

In reply to: Cleaning the fan

Have you made any fan setting changes in BIOS?
Dafydd.

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BIOS Changes

In reply to: As Bob said it could be PSU.

I did make one change in the BIOS to the fan speed, changed it from auto to normal.

I would have changed more settings but i haven't been given many to tinker with, is there anything in particular i should look for that could help?

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Maybe off target but.

In reply to: BIOS Changes

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Fan Speeds

In reply to: Maybe off target but.

Considering that the cpu fan is a 4 pin header. Should i do as the site suggests and make it PWM?

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Research more.

In reply to: Fan Speeds

I did say this might be off target but it's getting a bit confusing now. Wait 'till Bob chimes in for more ideas.
Dafydd.

Post was last edited on October 11, 2016 3:47 PM PDT

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Research

In reply to: Research more.

Ok, i will look into it a bit more. Thank you for all the help.

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Could be looking at fan replacement.

In reply to: Research

But hard to say. Wait for other ideas just in case.
Dafydd.

PS. Try resetting BIOS to defaults?
Mod edit to include info.

Post was last edited on October 11, 2016 4:00 PM PDT

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Sorry no.

In reply to: Bad Caps

A PSU has electrolytic caps that perform better when warmed up.

For PSU sizing we use the TDP of the parts.
GPU 180W
CPU 95W
Drives 20W each.


The PSU is a 500W single rail so it should be fine UNLESS there are age factors such as a hot PC and years old.

You will encounter clients that will tell you "it's not this." Go along with them and replace what they think it is.

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PSU

In reply to: Sorry no.

So would you say that there is a high possibility that it could be the PSU?

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I'm missing what age this is.

In reply to: PSU

Even so these AMD systems do seem to do this at 2 or so years. Sometimes it's the PSU, other times the motherboard. The one thing I learned is to never declare what it is till we fix it.

Here's my old friend's tech advice.

"When you're not sure what part it is, replace the cheapest one first."

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More information

In reply to: I'm missing what age this is.

The machine is currently 2 years old.

What i'm thinking of doing i just replacing the fan for now since that seems to be the only issue.

My system can sometimes be slow in places but i think that's a separate issue, could be a throttling cpu, bad RAM stick or HDD problems but it doesn't seem to be too bad at the moment, just occasional spikes such as a 1 second FPS drop to about 30 in a game then goes back to 60, this can happen every few minutes.

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AMD CPU

In reply to: More information

You may have the throttling or control function AMD C1E turned on in the BIOS. If you don't fear burning the CPU up, turn that off.

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AMD CPU

In reply to: AMD CPU

I've also heard that turning off cool n quiet can help too. Are they similar functions?

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Yes

In reply to: AMD CPU

One is for AMD, the other for Intel cpu's. You do it in the BIOS.

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Slow system

In reply to: Yes

Ah ok thank you.

My system being slow has been driving me mad, i cant put my finger on what it is. I have performed all kinds of clean up utilities. I cant tell if its my cpu, hard drive or something else. I performed a mem test and they seem to be in working order.

I've been thinking about doing a windows repair to see if that helps in any way.

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Answer
Fan

In reply to: CPU fan doesn't spin unless system restarted multiple times.

If the only thing that does not work is the cpu fan....replace the fan there cheap.

The next time it does not start give the fan a little nudge with your finger or some plastic object.

If no help reseat the fan plug on the mobo.

If no help back to replace the fan.

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Fan

In reply to: Fan

I've tried helping it spin before, no luck. I think i'm just going to go ahead and buy a new fan, i haven't upgraded to an after market yet so i probably should.

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do not turn off BIOS cooling control

In reply to: Fan

until you have replaced that fan. You might also consider hooking the fan direct to a power feed from the PSU instead of the CPU_FAN plug on the motherboard, that way it will run on it's fastest setting all the time, which is the safest if gaming, especially if BIOS control of CPU is turned off.

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