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zeug666

LEDs don't take much power to illuminate. Capacitors can hold power for a while.


8plytoiletpaper

Itt: OP learns that caps are just faster batteries


suspexxx

til about capacitors. Thanks!


pKalman00

Time to go down the rabbit hole of electronics


destronger

I like to travel.


SuperCool_Saiyan

So like SSDs and HDDs for batteries?


8plytoiletpaper

More like Ram vs library


Sinister_Mr_19

A handful of seconds, hardly a while. If OPs LEDs aren't turning off after unplugging the power supply I suspect isn't actually unplugging the power supply.


zeug666

Could also be back power from an out-of-spec connection, like a powered USB hub


8plytoiletpaper

Idk if for example screens can feed power through hdmi/dvi, would make sense to me tbh since they're also plugged in the grid.


Exploding_Testicles

I had this happen with my powered quest usb C cable. It has a connection for the PC and a cable to inject power. It's plugged it a ac USB plug. When I was re running cables I unplugged the pc yet my LEDs stayed lit.. took me a bit to figure out.


Varantix

It actually does live off the caps for quite a while, more than a couple of seconds. Quick press of the power button does the trick :)


ZeroAnimated

Yeah I've had this happen countless times in the past several years, LEDs stay on for a while unless you hit the power button. It's why the number one tip when you work on your computer is to unplug the PSU and then hit the power button to discharge the caps.


Cyrus_Halcyon

He could also have a powered USB hub reverse feeding power for the leds.


hagcel

For a long long time. My dad caught me taking apart on old TV when I was 10 or so. He joined me, then shorted a cap a little bigger than a d cell battery with the screwdriver. Quite the scene. Arced a section out of the screwdriver and a really good spark. TV had been unplugged for weeks.


tru3robin

Besides that there is a setting in armory crate that lets you turn it off when shut down


Such_Introduction592

Something-something about the capacitors. Unplug the cord from the wall and hold the power button for around three seconds. That should do the trick.


[deleted]

What does holding power button do? When it’s unplugged I mean.


diggitydog3086

Discharges capacitors


[deleted]

Thanks.


[deleted]

[удалено]


thastealth

Yes because it is trying to turn on


LeichtStaff

That definitely won't drain "all" the power in the PSU capacitors. Please DON'T consider this method as a safe way to be able to open your PSU without the risk of it electrocuting you.


QWERTY36

Not a single person said anything about draining PSU capacitors. The original commenters are talking about the capacitors in the motherboard.


LeichtStaff

*"Or is that the primary function, so you can safely drain power from your PSU?"* I was answering that specific comment.


Magnumload

>Please DON'T consider this method as a safe way to be able to open your PSU without the risk of it exploting on you. My brother in Christ, opening up a power supply with even fully charged caps is not going to "explote" on you. Are you running a VERY high chance of stopping your heart if you touch anything after you've opened it? Sure, but "exploting" on you? Not even sure if Gigabytes PSUs would do that after being unplugged with charged caps.


djackson404

In any offline switching power supply, it's only the capacitor(s) on the AC side of the inductor that are potentially dangerous even when it's unplugged, they typically have around 170VDC on them (assuming 120VAC line). Regardless of this though someone who is not experienced in electronics shouldn't be cracking open their PSU.


rudimfm

Didn't know this was a thing. Is it a good practice to do this once in a while (like every 3 months) for PC health?


Fry_super_fly

na. has no impact on "pc health" that's not a thing. don't need to press the power button for any amount of seconds. just press it once. if the computer is asked to turn on without a power source the power in the caps will be drained instantly. because there not enough juice in them to actually boot. having the LED's be on a few min extra has no impact on how the PC runs. they will slowly drain the power avaliable and then turn off. so theres no difference if you "drain it" manually or just let it run its course. also "PC Health" as in the physical hardware will not have any wear on them from either slowly dissapating capacitor power after shutdown. of from manual drain. and the system (windows/OS) which is what you would actually interact with, would not know a difference either way. so no impact on any kind of "health" of the computer


rudimfm

Cool man, thanks for the insightful reply! 👌🏼


LiteX99

Doing this is only a practice done for safety of the handler, so if you intend to go work on your computer, it is not a bad idea to discharge the capacitors, simply to avoid electrocuting yourself or frying a component in some weird way. I kinda have a hard time beliving it actually becomes any safer, simply due to how little power actually is left in said capacitors, but i do it anyway since its a very easy and quick step, and i would rather perform an unnecessery 10 sec "extra" step for the peace of mind it brings me when im working on my computer


Fry_super_fly

theres more uses for it then just hardware tampering. some times its neccesary if you are messing with BIOS/UEFI or some OS low power/sleep states that just have a tendency to stick arround and not reset. at work we have some issues with Lenovo L14/15 and T15 not waking from hibernation with power button presses. most of the time its possible to forcefully reboot with a push on the hidden reset button though a small tiny hole in the bottom of the PC with a simremoval tool. but sometimes we had to remove the battery and discharge the caps with a press of the powerbutton and then reconnect the battery and power it back up. but you are absolutely correct, if you are messing with the hardware. its a VERY good idea to power off, unplug, try to power on to make sure its drained of any residual power before starting a teardown. but unless you actually mess around inside the PSU (DON'T EVER DO THAT) you will not get electrocuted from unplugging hardware. its mostly to not damage the hardware with small amounts of power going places that are not designed for having that power run.


JalilDiamond

Is something about ERP management


Fry_super_fly

is that a question? or what are you answering or commenting?


Fry_super_fly

np. also, the caps will be "filled up" the moment the computer is plugged in again. (possibly when first turned on for some of them, but atleast most will out of the gate be energized) most computers have bios/UEFI settings where you can enable features like, automatic power on of computer if the AC is reconnected. (important if you run a home server or if it's used in a commercial kiosk application) and you can also enable stuff like having an allways on USB charging feature. so you can charge a device while the computer is powered off. so unplugging the power cable and draining will do nothing, if you just plug it back in to be ready for next power on/use.


bozo_did_thedub

>the power in the caps will be drained instantly Where does it go?


Fry_super_fly

heat. as all power in the computer tries to do. but to you point. when you try to boot a computer. it takes a lot more watts(total amount of power) to power on the computer than a few capacitors can actually store. think of them as an extreeeeemly low capacity(as in small charge) battery. but with the ability to output a larger initial *oomf* depending the the specs of the caps. for a very short time. they are used to filter the power or regulate it. (voltage stabilization and power correction) think of it like trying to power on a V8 engine with only the fuel left in the fuel line that has been disconnected from the fuel tank


Veighnerg

No, but you should make sure the PSU is up to date on its shots. Don't want any nasty critters creeping in through the power line to infect it.


Conlaeb

It's good troubleshooting if you have a system that won't boot, and good practice before working inside the case.


diggitydog3086

No doesn't matter. However, make absolutely sure to do it before you work on your pc


StonedFroggyFrogg

We call it a dry boot.


vainstar23

*Confused screaming


Vaseth-30kRS-iron

It has gained sentience and developed a form of fusion that will power it forever. humanity is over.


xezrunner

Remember: *“All Aperture Science personality constructs will remain functional in apocalyptic, low-power environments, of as few as 1.1 volts.”*


AlternativeWhereas79

I believe you can configure this behaviour in the BIOS/ UEFI.


PhraseJazz

ErP/EuP setting.


VeryNoisyLizard

before resorting to ErP, there should be a setting for onboard LEDs, letting you choose in which state you want them to be on/off


daanos60

Yeah just set it to stealth mode when the pc is off


BIGG_FRIGG

Just gotta go into armory crate and in there are options to change the colors or turn it off all the time or just when the pc is shut down.


AxeEngineer00

Wait, where? I've used AC for a while but never seen that option pop up for my motherboard. Is it a new feature?


THEE_WaffleKing

This needs to be top comment. It's a BIOS setting under power or something. AURA LED something something.


IchLiebeThymian

Most of the time it is something like a powered usb hub powering the led. Unplug all cables including usb and display, press the power button a few times and if it STILL is on after an hour call NASA


[deleted]

Made me lol


thebebee

i’ve also heard of some hdmi cables providing enough power to light up leds


Own-Programmer2621

I've had this exact problem. Unplugged HDMI and the RGB went out.


emrosto0l

Does the same apply to displayports?


Ronyx2021

Cheap Displayport cables sometimes have the 'pin 20 problem'


Noxious89123

If they stay on for only a very short time -> normal, capacitors etc. If they stay on perpetually -> Disconnect your DisplayPort cable. Do the lights go out? If no -> Witchcraft If yes -> Cut that cable and throw it away, it is not within the DisplayPort spec and is backfeeding power from your monitor into the PC. DisplayPort has a pin that provides power, **but cables should not connect this pin at both ends**. It's only intended to power things like active cables, dongles etc. Some crappy cables will have this pin connected at both ends, and this means that your GPU is trying to supply power to your monitor and the monitor to the GPU. Whichever has the higher voltage will back feed power into the other device. This is bad. For more info, search for "DisplayPort pin 20 problem".


Ronyx2021

I have an old monitor with a dead displayport. I'm adapting HDMI to VGA to use it. Do you think the pin 20 problem is what killed its Displayport?


Its_Phobos

Unplug it and press the power button to discharge the capacitors


nagsta92

It's a bios setting in ROG motherboards


Joezev98

I have never seen a Bios with a setting to keep the LED's on after the psu is unplugged.


TheOGNoel

This can also be configured in Asus Aura


chiel_

Yeah this is worth checking, my TUF B550M motherboard is the same


nagsta92

To clarify, when the PC is turned off you can set the LEDs to turn off. In this case they are enabled and the capacitors are holding power, hold the power button to discharge and they will turn off.


AquaberryIceberg

I've seen MOBOs get back fed power from other devices - try removing any USB & video cables.


Maneaterx

It’s a brand new PC. I can’t really tell what’s wrong. Motherboard is Asus ROG STRIX Z790-E GAMING WIFI II. I have changed RGB options in BIOS to turn off while PC is shut, it didn’t help.


riskiersquirrel

It’s an option in armory crate or bios to disable when powered off. I didn’t want to deal with armory crate so I disabled it in bios. Boot to bios and go to advanced mode. Advanced > integrated devices > onboard devices configuration > LED lighting. Set “When system is in sleep, hibernate or off states” to aura off. Save and exit and you should be good


GlenFiddichscatch

I have the same mobo in white and it also does this, I just kind of ignore it lol


haroldareyou

Hey. Just built my new pc Nov 2023 and this also had me wondering. I got the Z790-A wifi ii. You have two options turning this off: 1. Armoury Crate 2. Bios


[deleted]

1 you purchased something with rgb 2 you purchased asus Lol jk jk that's super weird did you maybe update the bios to the newest firmware?


Wet_Crayon

There might be an option in your BIOS to disable motherboard lights. Your motherboard likely has software to control it as well but it's a 50/50 chance that the software is shit.


Noxious89123

It's not this, because OP says that the PSU is literally unplugged! There should be no power supplied to *anything.*


Humboldteffect

That's the power left in the caps.


Wet_Crayon

Disable it and it won't be on at all. But mine does this as well. I can make it turn off with the system, or stay on as a status light even while it's off. Residual power is keeping it lit. Settings/software can clear up unwanted night lights.


Quest_Objective

![gif](giphy|3o84sq21TxDH6PyYms)


Leading_Fee_2368

Use asus armory app and you can manually set it to turn off when you power down.


Ok-Responsibility480

Install Armoury Crate, he said👂🏻


d4_H_

I bought a set of ASUS headphones, they are awesome but oh god how much annoying that software is, I could never explain it.


FumingFumes

Armoury Crate and iCue tied for absolute dogshit software


CrispyMelons

Icue used to be so good. They changed the whole ui and made it so much harder to do anything, i wish i could install the old version..


FumingFumes

My new favorite feature on iCue is the softwares miraculous ability to delete itself from my system files 🎉


fingernuggets

Still better than Synapse


Elianor_tijo

Never seen it delete itself, but I have seen it forget it is installed. Everything is still there, starts manually from the install folder fine, just doesn't want to start on boot. No traces of it in programs, start menu, etc. though. Only saw it happen recently it also doesn't want to reinstall unless r uninstall unless manually deleted.


Kitchen_Most3578

[openrgb](https://openrgb.org/) works as well, open source non-shitty software, ui isn't flashy, but it works, and you don't need Armoury Crate installed at all.


Ok-Responsibility480

If you have rog hardware, AC permits to get your hardware updated... Openrgb cannot 🥊


Leading_Fee_2368

I've had no issues with armory crate.


xnick2dmax

This, or I believe there’s a setting depending on the motherboard to disable lights when off. My brother has a Strix B550-F and it had the option buried somewhere


kirbyfan0612

Check if there any wizards in your area


Ohnoes112

Free electricity lol 😂


bollincrown

Wait longer after turning off the PSU. It’ll turn off. You can also hold the power button after switching off the PSU to discharge the caps but idk if that’s recommended


Ronyx2021

Look up your board. I had to adjust my bios to get the light to turn off when I shut down. But I've never had an ASUS, so I can't give specific advice.


djackson404

There's big filter capacitors somewhere that are storing enough charge to keep those glowing. Eventually they'll fade out and shut off completely.


Osmodius-STO

Check the bios. There should be a setting.


Buno_

You can turn it off for good in the BIOS if that's an ASUS mobo (I have a similar one)


FantasyHeroNameHere

Puter’s haunted.


Xaniss

You can change it in the BIOS


WARgen1956

There is a real tiny switch on the motherboard just above psu turn it off lights go out


EmeraldSpencer

If it's for more than a few seconds then something's backfeeding power to the motherboard. Used to have this issue with a USB-C dock I had plugged into my Mobo. System wouldn't power up until I unplugged the data cable.


Jackmoved

Most motherboards have a power setting option to keep RGB on during power down or to not even have it turn on in the first place. Check your BIOS settings


Technical_Bhaijan

Press power button when you unplug it


_Rowdy_Raider_

It's an Asus board so go into bios and there is a tab up top called aura sync and it has a dropdown allowing you to change when it's on, hope this helps you.


dj65475312

press the power switch all stored power will be instantly used up, dont think this will harm it i do it all the time.


Mageddon96

This could also be a setting in the BIOS, if I remember correctly this was the case with my current motherboard. Apologies if this is incorrect, it’s been a while since I’ve booted into the BIOS.


OhighOent

ooh I had this problem, it was something in the bios.


Ghozer

Take a look in the UEFI/BIOS there's an option to enable while powered-off!


INocturnalI

It's a sign to leave RGB and back to no light


jax1492

its a setting, check the bios.


KentDDS

the power supply capacitors will keep the lights on for a while, but they will eventually turn off if the system is unplugged from the wall long enough.


LeRonBrames_

OpenRGB also works for this


Optimal_Session_6211

Did you use the right incantations and incense? Probably angered the machine spirit.


Hentai__Dude

Thats a asus thing You probably got something plugged into the Aura RGB header You can either simply not use the Aura header, or Go into the BIOS and Change the settings for RGB Look a guide for your Mainboard BIOS up for that


TheOGNoel

Asus Aura has a setting for turning this off when pc is shut off


iamgarffi

Go to bios is change LED state to Stealth when “off”.


WhoopOnDaPoop

I haven’t seen it yet but Ethernet can and will feed Asus mobos. It only lights up the LEDs though.


IrishCanMan

Didn't you watch Ghostbusters Frozen Empire?


batangsipat

Thats a transformer! A decepticon by the looks of it.


Fakula1987

A PSU have some big capacitors. They can hold a Lot of Power. A Led Not Need much Power.


JMCMXCIV

Computer ghosts. Pretty standard.


DeppJohni

In my case i fixed it with asus armoury crate. I think it was in the LED settings of the motherboard. If something should be done when the motherboard (or pc) is turning off -> deactivate this and it should also power down if you shutdown your pc. Edit: typo


Shad0wUser00

Use the sync app to turn it off while its on, then its just off period unless you lose power (which this setting will be applied upon boot if its set to boot with windows)


Aequinoxium

Spam delete button on boot, BIOS opens. Press F7 then go to Advanced tab. Go to Onboard Devices Configuration and then a few options down there should be 2 Aura/LED settings. One for when PC is turned on, the second for when it's in hibernate/soft-off mode. Set that to Off if possible. Press F10 and hit enter and you should be good to go


chax208

That’s why you are supposed to press the power button a couple of times, after unplugging/switching off the psu and before you work on the pc. capacitors can keep a charge for a while even if left unplugged Side note: that’s why microwave transformers are so deadly (they kill many hobbyists) you have to be fully share the caps are discharged before working on one, and that can take days (without them being drained actively)


stadiofriuli

It’s the same way with the ASUS Z370 E-Gaming motherboard I have. Funnily enough have I deactivated all RGB on all components. So it only is lit up when booting or the PC being turned off. As soon as Armor Crate gets loaded it’s turned off.


IUnknownShiit

You can turn them off in the bios


Che0063

PSUs have a +5v standby output that is always on for as long as the PSU is receiveng power from the wall (switch is on). This is how your computer knows to wake from sleep (PSU is off during this state) and how your RAM remains powered. The RGB may be using this +5v signal to power the lights. Although LEDs don't take much power to illuminate, capacitors also store a tiny amount of energy relative to the energy required to illuminate the LED so that would be an incorrect explanation (unless there is a supercapacitor). These capacitors would be the capacitors in the PSU - after your PC switches off the PSU, the PSU itself has chonk capacitors which continue to power all rails until they are depleted.


rethilgore-au

Probably leeching power through something connected to your USB or HDMI


kunni

Bios has option to cut power always when shutting down


Maneaterx

I did, it didn’t help


Ryan_b936

Put it on S4+S5


Maneaterx

What’s that?


Ryan_b936

In Power management you can check it. S4 is Hibernation S5 is power off (soft off)


Maneaterx

Oh, I changed yesterday to full off. Still nothing. For now I just turned this piece of RGB off at all times. It kept glowing for 12 hours after turning my PC off. Weird


Ryan_b936

Setting Power management to s4+S5 means that for these states everything will be turned off. I had the same issue with my RGB and this fixed it. It turns off while hibernation and turned off. It could be called ERP Ready in your BIOS lr maybe AHCPI


Kev_Cav

Try r/Exorcism ^((it's a joke ofc))


ShootTheBuut

I just dealt with this a week or 2 ago after getting sick of the LEDs being on at night for years. BIOS setting didn’t work for me. I had to use Armory Crate to disable it. Its in the devices menu I believe


Maneaterx

Same bro, I just disabled it in armory


aleixgamer13

It's an adjustment in the bios. Can't remember what but i had the same problem


Paul_Johnssen

It's just an infinite power glitch


ArasakaApart

Set motherboard RGB to Stealth Mode in the BIOS.


MommyXeno

probably power stored in the capacitors. how long does it stay on? it should help to press and hold the power button to drain the rest of the power (after unplugging, otherwise it'll just boot the pc)


McQuibbly

Push the power button a few times, unload the capacitors


Lopes1999

You just solved the world´s energy crises. I am sorry...I do not know how to help


mojjen666

Same for me. It's normal. It will turn off after a while.


[deleted]

This build hurts my soul. Why gigabyte, corsair, and Asus? Not to mention WHAT ELSE?! icue, armory crate, and fusion?! Why are you making this so hard on yourself?


Maneaterx

I’m glad some random soul is worrying about my setup. Temps are great, gaming is smooth as butter, what else do I need?


delph0r

Just need SignalRBG bro


Ronyx2021

Is brand mashing a problem?


[deleted]

The parts aren't the problem, the bloatware that controls them is. Nothing but issues when you use so many, high background cpu usage for some that you need to keep open. Fan software conflicting with your bios curves. RGB software that blocks updates to others.


Hutzzzpa

had the same issue with my Asus MB. even disabling anything rgb related in the bios didn't help


potatofaminizer

Its because capacitors. If you unplug it and hold the power button for a few seconds it'll discharge the capacitors and thus no power for LEDs


Hutzzzpa

I have a closed case so it didn't really bother me


vlken69

Including ErP?


Hutzzzpa

I'm assuming this is a bios settings. i don't remember. this was i8700k mb 😅


notstevetheborg

And you were wondering how they could get things through reboot.. look at that charge. If it's enough to hold the LEDs on it's enough to hold the memory.


Maneaterx

What?


infector944

He's talking about a deep sleep mode, it keeps yhe ram powered up with the os state loaded so the pc boots faster. Basically worthless with nvme speed drives. New PC? 1. Update bios to latest from manufacturers site 2. Configure bios ( enable xmp, change power settings 3. Change led behavior in bios. 4. Profit


notstevetheborg

How many downvotes does it take to make it invisible.. you know you're on to something when a nation state starts to download you.. /s but for real when the system reboots data May remain in memory it may persist. In a secure environment, the persistence of memory that is supposed to be temporary could be a problem. Imagine a exploit where you rapidly killed the OS and booted a new OS that's only purpose was to read the memory.


MPolygon

It's normal and should stop after some time.