My cpu fan's not sp...
 

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My cpu fan's not spinning

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 PJay
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I have an ancient 4th generation I7 computer (Asus motherboard) that's been great for the basics for years. Over the last few days it's suddenly been experiencing overheating issues and it turns out that the CPU fan is not spinning. In fact it's rocking back and forth with a slight tick.

A quick Google suggests that this might be voltage related and suggests upping the fan voltage in the bios; despite there being a multitude of overclocking options (that I don't understand) I don't appear to have this.

I've reloaded the bios default and turned of everything unnecessary and even removed the sound & graphics cards, running the onboard graphics, to reduce load - with no effect. Rails seem fine and I'm not experiencing and other crashes.

The obvious next step is to replace the fan, but I'm not convinced it's broken. It occasionally spins up with no signs of straining or bearing wear and I can spin it easily with the flick of a finger. It's set to be on permanently in the bios.

I guess a new fan is the next thing to try unless any of you clever folk can think of a solution.

- EDIT -

The fan's reported as spinning around 1200rpm in the bios (though obviously isn't).


 
Posted : 22/10/2023 9:00 am
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How much is it to replace the ancient, perpetually spinning and likely worn out thing?


 
Posted : 22/10/2023 9:07 am
thols2 and thols2 reacted
 PJay
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How much is it to replace the ancient, perpetually spinning and likely worn out thing?

Very little I suspect. I shall investigate.


 
Posted : 22/10/2023 9:10 am
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cpu fans fail, it is most likely that…

To test, see if you motherboard has a ‘case fan’ connector, which is more than likely the same 3/4 pin connector as your cpu fan. You may need to disable the cpu fan warnings, in the bios


 
Posted : 22/10/2023 9:43 am
sirromj and sirromj reacted
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I know absolutely nothing about PC's but if this website doesn't make it spin, it's busted. Probably from this website wearing it out.


 
Posted : 22/10/2023 9:46 am
doomanic, oldnpastit, leffeboy and 7 people reacted
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👆🤣


 
Posted : 22/10/2023 9:50 am
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Mines doing the same, laptop runs for approx 12 minutes then overheating cuts the power. Going to rig up the hoover and dump any files to a memory stick before binning it.


 
Posted : 22/10/2023 10:40 am
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Assuming you are using a normal sort of PC case, you can get a 92mm cpu cooler for £14, easiest option. You could just replace the fan, but the CPU paste will be dried crap so you really need to remove the cooler and repaste whilst you're at it. New cooler will come ready pasted.

www.amazon.co.uk/Thermalright-ASSASSIN-Aluminium-Heatsink-Technology/dp/B0BNBX5MZT


 
Posted : 22/10/2023 10:46 am
thols2, oceanskipper, oceanskipper and 1 people reacted
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What geforce junky said, chuck a cheap cooler onto it, and re apply the thermal paste at the same time. Sorted.


 
Posted : 22/10/2023 11:13 am
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Mines doing the same, laptop runs for approx 12 minutes then overheating cuts the power. Going to rig up the hoover and dump any files to a memory stick before binning it.

@singletrackmindAre you sure the fan has died, or are the fan vents just full of crap? Worth taking a few minutes to check, but I'm, not sure a hoover will necessarily have the power to clear any crap, a £4 can of spray/air duster is probably a better bet. I'd personally try and remove the case and see if you can blow the vent out from the inside out.


 
Posted : 22/10/2023 2:05 pm
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 PJay
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I've ordered a replacement Intel one (the same that's currently fitted), cooler & fan. It's not dissimilar to the one linked to above & can be fitted/ removed from the front of the motherboard.

Fingers crossed it works 🤞 and it isn't the motherboard that's on the way out. Has thermal paste applied apparently.

I did remove the old one and hoovered out years worth of dust but it still wouldn't work.


 
Posted : 22/10/2023 4:00 pm
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It's broken. Replacing it is the right thing to do.

Get some specialised cleaner to remove the old paste. I use TIM cleaner which seems to be discontinued now, which is a shame because it's awesome stuff.

When applying new paste, less is more. You're filling in micro-imperfections on the mating surfaces, not making an Oreo cookie.


 
Posted : 22/10/2023 4:46 pm
leffeboy and leffeboy reacted
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Here, get this.


 
Posted : 22/10/2023 4:56 pm
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Wait.

can be fitted/ removed from the front of the motherboard.

Huh?


 
Posted : 22/10/2023 4:57 pm
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The Intel style coolers just kind of pop in and lock in place.. As opposed to a tower cooler which normaly requires removing the motherboard to fit a rear mounting plate... Think that's what he's referring to.

Rubbing alcohol/IPA is fine for cleaning the old paste off the chip.. Or even meths or white spirit in a squeeze.


 
Posted : 22/10/2023 5:11 pm
 PJay
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Yeah you just position the cooler over the cpu then just press the 4 pins on the corners through holes in the motherboard and they lock into place. No need to access the back of the motherboard. It can be released from the front too.

I've got some isopropyl alcohol so I can use that. Thermal paste is preapplied to the heatsink apparently.


 
Posted : 22/10/2023 5:30 pm
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This is really funny on the subject of thermal paste..


 
Posted : 22/10/2023 5:46 pm
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Ah. By "front" I assumed they meant "towards the front of the case" rather than "on top of the board."


 
Posted : 22/10/2023 5:55 pm
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Yes you need a very thin smear of paste. It actually has a much lower thermal conductivity than the aluminium you're smearing it on.


 
Posted : 23/10/2023 10:33 am
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mattyfez
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This is really funny on the subject of thermal paste..

I cringed so much when it was being applied to the socket 😅

Interesting results however, I'm guilty of overthinking this quite badly it seems.


 
Posted : 23/10/2023 10:47 am
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If you need to get it working in the short term sometimes a drop of oil in the bearing under the sticker in the centre of the fan will get it going again.


 
Posted : 23/10/2023 12:12 pm
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Something thinner like (yes, I know) WD-40 would be preferable to oil, but it is very much a short term get-you-home fix.


 
Posted : 23/10/2023 12:51 pm

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