computer fan suddenly speeds up

PC fans randomly speed up, even when idle

reddit.com › r › buildapc › comments › t4yys2 › pc_fans_randomly_speed_up_even_when_idle

It's likely the setting within bios (PWM) basically giving the fans the freedom to ramp up and down depending on what your system is doing or what the temps in the case are like for the cpu. It's not an issue as such, I disable pwm and run my fans fast to reduce temps constantly. Answer from Silent-OCN on reddit.com

reddit.com › r/buildapc › pc fans randomly speed up, even when idle

r/buildapc on Reddit: PC fans randomly speed up, even when idle

March 2, 2022 -

For the past couple of months I had this issue with my 3 year old PC where the fans randomly speed up, mostly during boot and then randomly while its idle or while Im playing. Now, Im not really sure if its just the case fans, CPU fan or both. But is it something to be concerned about?

Specs:

GPU: Asus GeForce RTX 2060 Dual Evo

CPU: Intel Core i5-9600k

MOBO: ASUS ROG Strix B360-F Gaming, S-1151

RAM: Corsair Vengeance LPX DDR4 2400mhz 2x8GB

SSD: Kingston A1000 480GB M.2

PSU: Corsair Vengeance 750M, 750W

CPU Cooler: Cooler Master Hyper H411R

CASE and case fans: Phanteks Eclipse P400 Glass, stock fans

OS: Windows 10 Home

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It's likely the setting within bios (PWM) basically giving the fans the freedom to ramp up and down depending on what your system is doing or what the temps in the case are like for the cpu. It's not an issue as such, I disable pwm and run my fans fast to reduce temps constantly.

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download speedfan and watch jayztwocents video from yt on how to set it up. It should fix your problem.

Microsoft Learn

learn.microsoft.com › en-us › answers › questions › 4315434 › desktop-fan-randomly-goes-full-power-for-1-2-secon

Desktop fan randomly goes full power for 1-2 seconds - Microsoft Q&A

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You might not want to gloss over the problem that way. They shouldn't be doing something like that in the first place really and there's another issue that your fix is simply masking.

The fan speed is supposed to ramp up. I don't know if its a driver, physical issue with the GPU, issue with that GPU's firmware, or a heat or airflow issue with your computer.

But, something isn't right. Whatever is happening, there's going to still be something going on in some code, in the case, with the GPU, or whatever despite forcing the speeds by another means.

The only thing that tells you is that the speeds are drastically changing and its involving the GPU fan speed. You could watch the GPU temperature and see if it spikes when the fan speed increases, talk to the manufacturer, etc.

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I will download Windows 11 and create a bootable media. Hopefully, it will work.

I did. Speedfan didn't show any fan "out of control". I thought it could be one of the incorporated fans from the case (which Speedfan didn't detect), so I turned them off and the problem remained.

Discussions

CPU fan speeds up for no reason, then slows down again

I built a new gaming PC in July, specs are as follows: Asus z270e MoBo i7 7700k Cryorig H7 16 Gb DDR4 ram ASUS ROG Strix GTX 1080 Corsair 750w PSU 500GB SSD 1TB HDD My CPU cooler is connected to the 4 pin CPU_FAN header, my chassis fans are connected to the CHA_FAN headers For some reason my... More on forums.tomshardware.com

forums.tomshardware.com

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November 23, 2017

Pc fan goes crazy :: Help and Tips

This means that when extra heat ... the fan speed increases. If it is an older PC you can replace the thermal paste and it should help keep fan noise down. ... is that dust under the FAN, dark grey dust carpet ( looks like it ) , please dont tell its that issue. we cant help if you dont get ride of it. , and what about GPU fans or chassie fans. keep in mind that was @VAR not OP and he do mention -Clogged CPU fan but not about clean it up at all, im ... More on steamcommunity.com

steamcommunity.com

August 13, 2019

PC Fans Speeding up and Slowing back down?

Try turning on the CPU fan smoothing option in your BIOs. I've had a similar problem with a Ryzen 1700 & 2700X. Ryzen boosts, has a voltage spike, results in a temperature spike and the fans ramp up to compensate. In my case it was most noticeable at idle where light tasks (like a web browser) would make the fans ramp up for a second, which is more annoying than a consistent drone. By adjusting the CPU fan smoothing you can made the fans less 'bursty' when responding to CPU temperature spikes. You could also make your fan curve less aggressive. Alternatively you could try overclocking which disables the boost and locks at a clock speed. This thread has a bit of discussion about it. More on reddit.com

r/buildapc

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July 26, 2018

PC fans randomly speeds up and slows down every 3-4 minutes or so.

This happens with computers. Even when you're not at your pc it is running processes which will usually spike the voltage and in turn the temperature. There's usually a setting in your fan control software called hysteresis or temperature hysteresis which can compensate with how quickly your fans will react to temperature changes. This is usually measured in two settings for temperature and time, meaning you set how long the temperature difference change has to exist before the fans react to it. This will allow for short spikes in voltage to return to normal temperature before having your fans increase. More on reddit.com

r/pcmasterrace

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1

May 23, 2023

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The Windows Club

thewindowsclub.com › the windows club › pc fan randomly speeds up and slows down or stops

PC fan randomly speeds up and slows down or stops

We suggest you run System File Checker and DISM tools to repair the corrupted system image files. The speeding and slowing down of fans randomly might be associated with the BIOS. We suggest you check for BIOS updates.

Published March 22, 2024

Tom's Hardware Forum

forums.tomshardware.com › home › components

CPU fan speeds up for no reason, then slows down again | Tom's Hardware Forum

November 23, 2017 - As always check for a BIOS update and besure you have an adequate CPU fan as well as adequate fans for the case. It could be just compensating for surrounding air temperature if their is not adequate case cooling. Remember all of the other components generate heat as well.

Linus Tech Tips

linustechtips.com › computer hardware › cooling

How to fix this? Case fan randomly speeds up for a second, then slows back down. - Cooling - Linus Tech Tips

June 10, 2020 - Yesterday after upgrading my graphics card, I dropped the side glass door and it shattered into a million pieces. I noticed something strange, every since this happened, my case fan randomly spins up really loud, for like a second, then slows back down and goes quiet for a few minutes, then again...

Quora

quora.com › Why-is-my-computer-fan-constantly-revving-Even-when-its-not-hot-overheating-and-Im-not-on-my-computer-it-revs-it-does-so-constantly-when-I-am-on-it

Why is my computer fan constantly revving? Even when it's not hot/overheating and I'm not on my computer it revs, it does so constantly when I am on it? - Quora

Why does my laptop fan randomly ramp up to 7,000 rpm when doing menial and lightweight stuff such as YouTube watching? Why do my computer fans run very loud all of a sudden? There are no background processes and the BIOS is okay. What could it be? ... Unless you bought an ultrabook or tablet with for example i7–7Y75 - you have a CPU that consumes more than 5–6W while working at full speed...

Cybersided

cybersided.com › home › random pc fan revving: what causes it & how to fix it

Random PC Fan Revving: What Causes It & How to Fix It

September 17, 2021 - The problem comes when less computationally demanding software creates a larger-than-necessary CPU load. When you notice increased fan speed, take notice of what programs are running.

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MSI

forum-en.msi.com › home

Fans suddenly start to increase speed

April 19, 2024 - MSI Global English Forum

Steam Community

steamcommunity.com › discussions › forum › 1 › 1643170903506592365

Pc fan goes crazy :: Help and Tips

August 13, 2019 - This means that when extra heat is generated it is not being transferred so the fan speed increases. If it is an older PC you can replace the thermal paste and it should help keep fan noise down.

reddit.com › r/buildapc › pc fans speeding up and slowing back down?

r/buildapc on Reddit: PC Fans Speeding up and Slowing back down?

July 26, 2018 -

Hey guys, I built my PC last November and it's ran well since then but within the past few days I've noticed something that I think is a bit odd.

I bought The Witcher 3 to play when my friends aren't on or when I just want to play a good single player game. While playing, I noticed that my PC fans were speeding up and slowing down what I considered to be pretty randomly. I figured it was since I had a lot of the graphics turned up pretty high so I turned some of them down but the fans still seemed to be fluctuating in rpm's. I then noticed they were doing similar fluctuations while I was playing CS:GO, where I have all but one or two settings turned down as low as possible.

I have an NZXT kraken AIO so I checked the connections plugging in the pump to make sure they weren't loose or anything. I guess that really only leaves my GPU fans and case fans but I'm not sure what I need to do next if there is anything wrong in the first place.

My build is as follows:

Case: NZT S340 elite

CPU: Ryzen 5 1600

GPU: Asus Dual Series 1070

CPU Cooler: NZXT Kraken X62

Case Fans: stock NZXT for exhaust and stock kraken fans for intake

Edit: I usually play with headphones on so this may have started earlier but when i was playing The Witcher using my speakers is when I first noticed the fans doing this. I also had my headphones off when I was playing CS:GO and noticed it.

Top answer

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Try turning on the CPU fan smoothing option in your BIOs. I've had a similar problem with a Ryzen 1700 & 2700X. Ryzen boosts, has a voltage spike, results in a temperature spike and the fans ramp up to compensate. In my case it was most noticeable at idle where light tasks (like a web browser) would make the fans ramp up for a second, which is more annoying than a consistent drone. By adjusting the CPU fan smoothing you can made the fans less 'bursty' when responding to CPU temperature spikes. You could also make your fan curve less aggressive. Alternatively you could try overclocking which disables the boost and locks at a clock speed. This thread has a bit of discussion about it.

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Fans spinning faster when components are under load is normal. Sounds like you just need to set a custom fan curve so they don't ramp up in such a quick fashion. Should be able to get a CPU & case fan curve in your BIOS. GPU fan curve with your Nvidia driver, MSI Afterburner or possible an ASUS graphics card utility?

MakeUseOf

makeuseof.com › home › technology explained › pc fans running at full throttle? 6 fixes

PC Fans Running at Full Throttle? 6 Fixes

May 4, 2024 - Assuming everything is alright with your computer, the most common reason is an incorrectly connected or broken fan header. Alternatively, you may have a software issue keeping your fans locked at full speed.

HP Support Community

h30434.www3.hp.com › t5 › Desktop-Hardware-and-Upgrade-Questions › CPU-fan-randomly-spins-at-max-speed › td-p › 7094917

CPU fan randomly spins at max speed - HP Support Community - 7094917

April 23, 2019 - The computer has a water cooled CPU and the fan at issue is set up to cool the radiator. The fan will turn on at max speed when the CPU hits around 10-20% load but runs normallly under that

The Windows Club

thewindowsclub.com › the windows club › general › cpu fan runs at full speed all the time

What to do when your CPU Fan runs at full speed always?

If the CPU fan is running at full speed still, check out the heat sink of the processor. Read: CPU_FAN vs. CPU_OPT for AIO · If you find that the fan sensor is working and there are no apps using up significant CPU resources for long periods, you may want to replace the processor’s heat sink. Heat sinks absorb extra heat from the processors. They can be replaced easily if you have been playing with your computer’s hardware.

Published October 5, 2024

WindowsDigitals

windowsdigitals.com › home › hardware › computer fans randomly speed up, why?

Computer Fans Randomly Speed Up, Why?

June 17, 2024 - If you notice that your computer’s ... it could mean a few things, but normally it just means that your PC is running very busy and causing it to build up some heat....

HP Support Community

h30434.www3.hp.com › t5 › Notebook-Hardware-and-Upgrade-Questions › Laptop-fan-suddenly-high-speed › td-p › 6640984

Laptop fan suddenly high speed? - HP Support Community - 6640984

April 17, 2018 - I frequently play games on this computer which often maxes out the CPU usage at 100%, but it never spins up the fan at all, even when the body feels hot to the touch, which is the bigger issue. I had been using HP CoolSense and found that it made no difference whatsoever. My laptop didn't come with it pre-installed and other programs such as SpeedFan ...

Quora

quora.com › Why-is-my-computer-fan-running-so-fast-and-its-not-doing-anything

Why is my computer fan running so fast and it's not doing anything? - Quora

Answer (1 of 5): This looks like an old question (answered Mar 31). Leigh’s answer was very thorough, but missed mentioning one possibility. You may be using your laptop in bed, on your knees, or on some other soft surface that is blocking the airflow. Don’t! Use a tray that allows a free ...

reddit.com › r/pcmasterrace › pc fans randomly speeds up and slows down every 3-4 minutes or so.

r/pcmasterrace on Reddit: PC fans randomly speeds up and slows down every 3-4 minutes or so.

May 23, 2023 -

How do I fix it

Top answer

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This happens with computers. Even when you're not at your pc it is running processes which will usually spike the voltage and in turn the temperature. There's usually a setting in your fan control software called hysteresis or temperature hysteresis which can compensate with how quickly your fans will react to temperature changes. This is usually measured in two settings for temperature and time, meaning you set how long the temperature difference change has to exist before the fans react to it. This will allow for short spikes in voltage to return to normal temperature before having your fans increase.

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I can’t check rn but I don’t think all the fans are doing it by the sound. Maybe it’s only one

Dell

dell.com › support › kbdoc › en-us › 000179087 › how-to-troubleshoot-fan-issues

How to Troubleshoot Fan Issues | Dell US

1 week ago - Diagnostic Tip: There is no dynamic control available during the ePSA tests — the processor runs at full speed during these tests, and the fans will likely go to high speed throughout the testing. ... Many applications or software run in the background, in the system tray (also called the notification area). These applications usually launch during startup and run in the background but remain hidden. Preventing these applications from launching during startup will not only improve the performance of your computer but also help the fans run slower comparatively due to lesser load on the processor (CPU).

Quora

quora.com › Why-do-my-computer-fans-run-very-loud-all-of-a-sudden-There-are-no-background-processes-and-the-BIOS-is-okay-What-could-it-be

Why do my computer fans run very loud all of a sudden? There are no background processes and the BIOS is okay. What could it be? - Quora

Computer works for some time. All of a sudden all case and cpu fans spin to full speed and won’t stop. CPU load around 5%. All monitoring utilities (Gigabyte’s SmartFan, HWinfo) read low temperatures throughout the board (25C on CPU) and RPMs are definitely wrong (reads 300rpm when at full speed it should be 1500rpm). And monitoring values seem to stuck anyway. The only workaround was to put Windows to sleep and wake it up ...

Ask Leo!

askleo.com › home › why is my fan running at high speed?

Why Is My Fan Running at High Speed? - Ask Leo!

June 11, 2021 - It sounds like your machine is getting hot and trying to cool itself by running the fan at full speed. The fan cools the computer down a bit, so the fan slows down, but then the machine heats up again, and it’s full (fan) speed ahead!