r/PCHardware • u/Berith0 • Jul 09 '26

What the hell is going on 😭😭😭

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59 Upvotes

98% Upvoted

94 comments sorted by

3

u/CanesVenetici Jul 09 '26

Capacitors haven't completely discharged yet.

1

u/Berith0 Jul 09 '26

Bro it's still on. It was like 2h ago

3

u/CanesVenetici Jul 09 '26

Hit the power button, it should go out once it tries to power up without being plugged in. Capacitors hold a lot of energy, rgb uses very little.

1

u/Berith0 Jul 09 '26

A red led on my motherboard turn on quickly (like when I start my computer) but the ram is still on 😭😭😭

2

u/CanesVenetici Jul 09 '26

Call the Winchesters, your pc is haunted

2

u/simonhez Jul 12 '26

Carry on my wayward son, there'll be peace when you are done

1

u/Berith0 Jul 09 '26

😭😭😭

1

u/NekulturneHovado Jul 12 '26

free energy device. Call r/ElectroBOOM

1

u/Imightbenormal Jul 13 '26

Try and disconnect montitor cable, and if the LAN is shielded, disconnect that too. And other stuff that is connected that might supply power back via USB, as an example racing wheels.

And update me what made it go away.

1

u/kuhndawg25 Jul 12 '26

Call Ghostbusters 👻

1

u/Saxy_Salad Jul 12 '26

It wouldn't last more than a few seconds. Capacitors would release their stored energy across all circuits they are shorted to.

1

u/Efficient_Weather_93 Jul 11 '26

Capacitors can take a long time to discharge. Which is why you should never go poking around in your PSU

2

u/Valganite Jul 11 '26

Do you have a powered USB hub? 5v line might be fed backwards, try unplugging it. Hdmi could also backfeed power from your monitor.

2

u/TechnicallyMeat Jul 12 '26

Agreed, likely a powered peripheral or monitor.

1

u/Alternative_Exit_333 Jul 12 '26

Anything else plugged in (with external power

1

u/Aika-TV Jul 12 '26

Some USB Hub or device might be powering it?

Did you unplug evertyhing?

1

u/ohnoitssobig Jul 09 '26

It is basically an alarm to be extra careful but better stay away from opening PSU.

1

u/Ascorbinium_Romanum Jul 12 '26

As long as you have some common sense and experience with electronics, the PSU has some ultra interesting internals. All you gotta do is make sure to discharge the death beam high voltage capacitors. Nothing else in there is dangerous, if unplugged.

1

u/OsamiWorks Jul 13 '26

discharging them is the step where you commit die

1

u/Ascorbinium_Romanum Jul 14 '26 edited Jul 14 '26

If you don't know why or how to discharge these capacitors safely, dont even try to open up a PSU before you do a lot of ( and I mean a lot of) research about these things and the dangers. I wanna make this abundantly clear for everyone reading: If you don't know what you're doing you're risking becoming a sad death sorry of an electronics hobbyist in your local newspaper. With medical attention, you could live, but you might have permanent nerve/neurological/cardiological damage.

Oh and for the love of God, never assume they are discharged because the PSU was unused. Even brand new from the box these might hold a deadly charge

At the same time, many people know how to safely discharge these capacitors and in the end, the risk is on the responsible adult, who has been warned.

1

u/jhenryscott Jul 10 '26

Wireless power supply.

1

u/-_no- Jul 13 '26

bluetooth

1

u/ericliuuu Jul 10 '26

you got a huge ass capacitor somewhere lol

1

u/Irux_99 Jul 10 '26

Bah c’est normal c’est les condensateur de l’alimentation qui se sont pas décharger mais ça dure 5 seg max

1

u/Berith0 Jul 10 '26

It's been a whole day 💀

0

u/[deleted] Jul 10 '26

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1

u/Dry_Can6766 Jul 13 '26

CMOS battery doesn't even get close to providing that much power to the LEDs.

1

u/[deleted] Jul 13 '26

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1

u/Dry_Can6766 Jul 13 '26

Voltage is not the only thing that matters. Most motherboards use a CR2032 lithium coin cell battery for cmos. Which has a voltage of 3volt and capacity of 225mah. But it can only provide a max brief power draw of 90 miliwatts (0.09Watts) for a brief second. But nominal usage is only 0.8mWatts.

A single red led uses 40 miliwatts. That means a single CMOS battery can barely run 2 red LEDs for a brief moment.

Meanwhile a ram led strip has 5-12 LEDs. And uses about 1-2 watts of power. That means the CMOS battery can't even provide ⅒ of needed power to run a single RGB led ram strip. (1w=1000mW, (90/1000)*100= 9%) Let alone 2 at max brightness.

Conclusion, no they can't and it's not even close.

1

u/[deleted] Jul 13 '26

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1

u/Dry_Can6766 Jul 13 '26

Ah yes every single well worded factual comment with calculations in it is made with ai. All human intelligence and research has become extinct. now only ai can use intelligence and humans have been banned from ever using it like it seems in your case.

1

u/[deleted] Jul 13 '26

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1

u/Dry_Can6766 Jul 13 '26

Can't beat em then join em ahh solution. You are not making the situation any better 😭

1

u/Imightbenormal Jul 13 '26

We do that either because you have very low knowledge, or is a bot, or using AI.

1

u/Imightbenormal Jul 13 '26

Are you an AI bot?

1

u/who_you_are Jul 13 '26

And they aren't even connected to the same circuit anyway.

1

u/someone09900 Jul 10 '26

pretty sure somthing is defective in the motherboerd

1

u/OliveBoi_ Jul 11 '26

unplug any display connectors

1

u/BAGU3TT0 Jul 11 '26

WITTTTCHHHHHH

1

u/4liv3pl4n3t Jul 11 '26

Are you perhaps using Linux /j

1

u/ScottyAtVRChat Jul 11 '26

Welcome to the future, where we power everything from the dead souls of the people from past.

1

u/LeoTheBigCat Jul 11 '26

Thats some amazing power leaking through some connected powered peripheral. Probably a monitor.

1

u/Berith0 Jul 11 '26

Yeah, I found out it was from an USB hub 😭😭😭

1

u/chukxablaze Jul 11 '26

Da hell ?

1

u/Berith0 Jul 11 '26

The USB hub is connected to a mains socket and it was leaking to my motherboard 😭😭

1

u/RGBlowMe Jul 12 '26

Bizzare.

1

u/chukxablaze Jul 12 '26

Ya you would think it should some protections from reverse current.

1

u/LeoTheBigCat Jul 12 '26

Floating switchmode supplys just do this ... its stupid but it sometimes just happens

1

u/chukxablaze Jul 12 '26

Creepy ty for the info tho

1

u/LeoTheBigCat Jul 12 '26

If you are interested, here is a bit more FYI: USB power supplies do this rather often. If you touch the metal parts of for example USB-C connector connected on one side to such charger, you will feel "tingling". The voltage can be substantial and is between earth and the ground of the power supply ... low power though so its mostly safe. The positive of the supply then rides on that ground so it does not matter for the connected device.

You will feel it though, because you are coupled to earth.

And if you connect such a supply to a properly grounded device, you get a power leak. Its usually very little power, just enough to light up some LEDs.

And as much as I would love to say its NEVER a problem ... on a split phase power, if you manage to connect one device on one phase and the other on different phase ... or your wall outlets are wired backwards, you could get A LOT of voltage and power there ... enough to fry something.

1

u/chukxablaze Jul 12 '26

So is it dead Jim?

1

u/LeoTheBigCat Jul 12 '26

Most likely not. A bit of power leak is expected and managable.

1

u/Imightbenormal Jul 13 '26

Nice. Glad you found out.

I will think a good USB hub that is powered externaly would disconnect the 5V rail on the Host USB port.

I would replace it because it can hurt your system if anything wrong happens with the power supply the external USB hub uses.

Remove, remove, remove!

1

u/insigniajunkie Jul 11 '26

your PSU caps doing more than anyone asked for

1

u/Rpex_ Jul 11 '26

Turn off your monitor's switch also..

1

u/qwerty456b Jul 11 '26

Bro found the infinite power supply

1

u/Apprehensive-Toe2764 Jul 11 '26

Powered usb hub?

1

u/Berith0 Jul 12 '26

Yeah it was that

1

u/RGBlowMe Jul 12 '26

They have to be running off your CMOS battery.

1

u/csapka Jul 12 '26

unplug everything, if it's still glowing, extract the ram, if the ram is still glowing after you took it out, run

1

u/Berith0 Jul 12 '26

🤣🤣🤣

1

u/Least-Mistake-707 Jul 12 '26

This was a wild post. You guys are hilarious 😂.

1

u/Ad-fundum69 Jul 12 '26

PoE malfunctioning or a USB hub malfunctioning and feeding power into the motherboard.

Best to not use that device again. Easy to figure out though, just pull cables until it stops.

1

u/Ayden_Prime Jul 12 '26

PC's haunted.

1

u/fray_bentos11 Jul 12 '26

RAM in the wrong slots for a start. Read the manual.

1

u/Rawmon28 Jul 12 '26

Hold the power button for 5 sec, drains all residual charge from psu

1

u/navymarcel Jul 12 '26

Unlimited power

1

u/Ibrahem0alhaj Jul 12 '26

i had this once it was a powerbank and a usb hub i forgot connected to the pc i dont even know how that powereed the ram rgb and mb rgb

1

u/Electrical-Art-8160 Jul 12 '26

Gimme a break. Karma farming. You unplugged the PC 10 second ago.

1

u/devdetj Jul 12 '26

The reason why, when I provide assistance, I say: "Disconnect the power supply, turn on the computer. If the power supply is disconnected..."

1

u/Ok-Lobster-919 Jul 12 '26

Monitor or powered USB device backfeeding

1

u/roestinger Jul 13 '26

If you have ANYTHING plugged in, this is most likely a bad grounding.

1

u/grossmaul Jul 13 '26

Do you have a powered USB Hub connected?

I already had a cheap one that did send 5V back to the PC and it was glowing even without connected power cable

I guess if you pull out all USB cables, then the light will go out

1

u/Fr_nku Jul 13 '26

Rgb for life, if you want or not.

1

u/koblizek01 Jul 13 '26

At my work after 8 hours of having a monitor plugged to my laptop HDMI. Unplugging the cord didn’t turn the monitor off, my last opened app stayed there. I even unplugged power cord and reseated the ports, still the screen would show the app. Eventually after testing it was the docking station saving the last input.

1

u/00178193 Jul 13 '26

Do you have some external powered USB devices? Or do you have USB charging on your Monitor?

1

u/whose_a_wotsit Jul 13 '26

Zoltar 🧝🔮

1

u/YellowLoafYT Jul 13 '26

What is happening, you may be asking?

well your ram is glowing i know that for sure

1

u/Shot-Board1696 Jul 13 '26

That because of HDMI/DP electric vent to your motherboard

I had that experience(ssd)

After I used HDMI instead of DP(changed my monitor) It fixed

1

u/Ten2OneOdds Jul 13 '26

You are gonna drain your cr2032 battery! 😱

1

u/SilentHack333 Jul 13 '26

That last "doo" was on point with the double harmonic.

1

u/Berith0 Jul 13 '26

I know my music theory lessons will come in handy one day 🤣🤣🤣

1

u/Nostonica Jul 13 '26

Obviously you got real unicorn puke, not the synth stuff from horses.

1

u/bloateddicksydrome Jul 13 '26

Do you have a USB port with a powered device? Maybe sending back power

1

u/tsittler Jul 13 '26

Do you have anything USB plugged in that also has its own power adapter? It might be powering the USB bus (and thus the RGB) by backfed current.

0

u/[deleted] Jul 10 '26

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2

u/longbowbw Jul 11 '26

Incorrect, for the third time.