the fan doesn't turn off in standby

Question

Hello,
I set up an AMD Athlon 2600+ configuration with a computer-savvy friend in an Antec Sonata case. I chose this case because it was supposedly quiet. But the fans are noisy, including (and it’s increasingly annoying) in sleep mode: they never stop spinning.
Does anyone know what to do to make the fans stop when I switch to sleep mode?

Configuration: Pc AMD Athlon XP 2600+ running Windows XP Pro. Asus A7V600 motherboard.

vinyjones · Accepted Answer

Hum, I feel like everyone isn't talking about the same thing here,

there are 2 sleep modes,

mode S1 (POS), where the computer will turn off certain peripherals to save energy (screen, USB, hard drive,....) but the computer is still on and capable of performing calculations (hence the fans are running)
(it is in "stand by")

mode S3 (STR), here the computer shuts down all its functions, including the processor; only the RAM and one chipset remain powered to preserve the memory content. If it weren't for a blinking LED, one might think the PC is completely off since no fans are running.
(the PC is in sleep)

there is also hibernation mode (also called "deep sleep") which is just a saving of the system's state (by copying the content of the RAM to the hard drive) and then turns off. (it is indeed possible to unplug it)

When the PC is turned on, instead of creating a new environment, the system reconstructs the computer’s RAM from the hard drive.
(copying the RAM takes quite a while, the time saved is not huge compared to a restart; it is rather useful if you want to regain your work environment exactly as it was, more secure than S3 since the computer no longer depends on power but much less fast)

So for those whose fans remain on, it is in S1 sleep mode,
you need to change it in the BIOS menu.

orts solange · Answer

Hi, I have the same problem as you and it's always running.
It's true that it's annoying. If you have an answer, could you let me know? I'll do the same. Thank you.
Address: orts.solange@evc.net Thank you.
--
Tupac

insomniak · Answer

Hi
If the fan that cools your processor's radiator stops, then your processor will overheat very quickly and fry, sleep mode or not!
So it never stops, unless there's a failure!

There are heatsinks with fans equipped with a sensor, which adjust the speed according to the CPU load,

As for case fans connected to the motherboard or the power supply, it's the same; they won't stop spinning unless you connect them to a controller (rheobus) that allows you to adjust (decrease/increase) their rotation speed.

You can have a very good case (I don't know the Sonata, but it can't be that bad), but if you have fast-spinning fans, the noise will be high.

You can also test by unplugging one of the case fans,
--
I like to play with Uncle Sam.

eric · Answer

Hi, sorry for the wait but I looked the whole afternoon
and your situation is really tricky; it's not common. A lot of people tell me that you might have caught a virus, but I told them that you formatted it several times and that Windows keeps crashing

and I think you're right, try downloading another Windows
that way it will take different parameters than yours, but format it first. It will take a bit of time, but it might be worth it
don't forget to keep me updated please, I'm looking in the meantime
good luck Eric

jmp59 · Answer

Hello,

After reading the previous posts, there's no way to know where it comes from!
Is it the fan from the case (i.e., the power supply) or the one from the processor?
In both cases, it's essential that they run when the machine is in sleep mode, as insomniak has rightly pointed out.

The stories about viruses or changing the Windows version are nonsense. That won't change the speed of the fans and thus the noise they make.

The only way is to lower the speed of the fans depending on the temperatures.
You have this for the description and buyer reviews: https://www.ldlc.com/
and this for the price: http://www.cdiscount.com/mag/fich_prod.asp?prix=discount&prodid=00000000000000000... (it's the same but cheaper)

sor · Answer

I don't understand when you say that the fan should keep running while in standby.
Personally, I have a GAK8N Ultra SLI, and when I put it in standby, all the fans stop (processor and case).
As a result, I only restart the computer for updates.
I don’t know how that works, but in any case, that’s how it happens for my PC. (Packard Bell IPOWER 6724 SLI)
I also don’t see why the processor fan should run, because it doesn’t heat up when it's in standby (measured with Everest), I have the same temperature upon resuming, which is 33°, if the computer isn’t "working", it doesn’t heat up.
In any case, you need to make sure that the fans are connected to the motherboard; after that, I don't know if it's the motherboard or Windows that manages this.

yazinet · Answer

Hi

I have 3 PCs at home, let me explain. We’re on XP, the main PC is a DELL and the fan is placed on the graphics card and it shuts down immediately when we put it to sleep, it's perfect!!!!!

However, the other 2 which didn’t come from the same store never shut down.

My husband tells me it’s not normal, do you have any answers? Could it be coming from my motherboard (KT4V) or something else?

Thank you!

miardo · Answer

If your CPU fan is always running at full speed, it's because your motherboard doesn't take the fan speeds into account. Have you changed your motherboard or anything else?

jmp59 · Answer

Hello to everyone who wants an ultra-quiet PC  You can try it!  -- To err is human, to persist is diabolical.

grosminou · Answer

You will all excuse me for responding several years later. Having encountered this issue just yesterday and ending up here through research but without success, I would like to share my discovery (for those who may have the same problem and, like me, end up here).
The issue arises in the mouse settings when the box "Allow this device to wake the computer" is checked.

pularkio · Answer

It is probably due to the power management settings that can be configured in the BIOS (for example: S4 state).  Or maybe it's because you've enabled wake on lan.

The fan doesn't turn off in standby

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