Questions tagged [power-supply]
A power supply is an electronic device that supplies electric power to another device, such as a computer, monitor or printer. This is achieved by converting wall power (or mains power) to a lower voltage, and in most cases also from AC to DC. Most power supplies also provide protection from overload, power surges and other potentially problematic or hazardous conditions.
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Is it possible to ignore a docking station's power supply, if plugged in to laptop charger
I recently purchased a new docking station (Plugable ud-ultc4k) for use with my work laptop (Dell Precision 5760). The docking station is able to provide up to 100W of power, whereas my laptop can ...
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Laptop turns off suddenly, then wont turn on again
This laptop started to present this problem in which it turns on briefly for about one minute, then it suddenly turns off and after that wont turn on again. If I wait about one month or so and try ...
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Can switching off computer’s power supply while it’s running damage the I/O?
Working on a HTPC build, and we accidentally switched off the PSU while it was running. Motherboard still runs and fans work, but video output and USB devices are no longer responding. Did we fry the ...
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Lenovo charging issue - help needed regarding the recently purchased charger
I've got a Lenovo Ideapad 100S-11BY, Modal: 80R2 Laptop
I just recently bought this charger for it - Charging Device Listing
When I plug in the charger into the laptops charging port, after about 10 ...
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Can a motherboard's USB controller / port be damaged if an externally powered USB cable is plugged into a powered USB port? [duplicate]
I mistakenly plugged a USB cable into a powered USB-C port on my laptops motherboard that was concurrently plugged into a 5V 2A USB to Wall AC adapter. Nothing seemed to happen at the time but could ...
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Options to provide Type-C Power Delivery from a Type-A host
So in my vehicle I have some Type-A ports and those can be used with a phone to get Android Auto. Of course this is the 5V, 500mA standard and this can be enough to have a small net power for my Pixel ...
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How to determine if GPU or PSU is causing shut downs?
I've been having consistent (15-20 minutes while under load) PC shutdowns that occurred spontaneously a few days ago. These shutdowns are like someone pulled the plug on my pc and then booted it up ...
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My old CPU, mainboard works perfect but the brand Ryzen 5 4600G and MSi B550 Tomahawk board is not working
My old power supply, old CPU and old mainboard works perfect
https://www.youtube.com/shorts/Fc1bB-j4TKo
But the B550 Tomahawk board, brand new Ryzen 5 4600G is not working
https://www.youtube.com/...
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My computer can turn on only when I move ATX cable
https://youtube.com/shorts/9bu40A6A0Ic?feature=share
As you see in the video in order to open pc, I need to move and find the true position of atx cable.
-when It is not in true position, once I press ...
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Weird laptop battery behaviour
On my 4 year-old laptop, the battery discharge pattern is weird. It goes does relatively quickly and steadily down to 6%, then remains at 6% for 1.5 hrs and then very quickly goes down 1%/min.
I had ...
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Gigabyte B760 Gaming A AX motherboard - USB not charging
The USBs of the Gigabyte B760 motherboard only charge the connected iPad when the computer is powered off (and also not always). When powered on, it does not charge.
I found the Gigabyte on-off charge ...
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Can a non-detachable USB-C charging cable from a laptop charger be extended?
I have an Acer Swift 3 laptop that charges from a 65W USB-C wall charger it came with. The cable is ~4ft long, but I need it to be a foot longer to comfortably reach the laptop on my desk. ...
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MacBook Air doesn't power on when the battery is connected
A friend asked me to look into his MacBook Air because it didn't want to power on anymore. Took a look at it, opened it, took the battery out and connected the charger cable and it worked every single ...
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Windows 10 won't go to sleep
Recently, Windows started to hang when going to sleep, which then shuts down on its own. The odd thing is that this doesn't happen all the time. It is able to sleep normally without issues when I just ...
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Are there different kinds of SATA power connectors, and if so, what terminology do I need to distinguish them?
I have two power cables that I'm trying to use to hook up multiple hard drives in an Unraid system. Both look superficially like this:
...with a 6-pin connector like this that goes into the power ...
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Asus G751J won't turn on after suddenly shutdown itself
So yesterday I was working on my company's laptop when my personal laptop (asus g751j) just died with no warning (I wasn't doing anything on it).
It suddenly shut down. I tried to turn it back on but ...
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What's most important in a power supply for a video workstation build? Input voltage, amperage, efficiency, or # of SATA connectors?
This is a practice question for the CompTIA A+ exam. I understand from reading other posts that some have strong opinions on this cert, but I'd just like to know why one answer is correct. I've ...
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Test PSU 8-Pin CPU/PCI-E Connection
I've bought a second-hand Gigabyte P850GM PSU which I suspect might be faulty.
I have tested the 24-pin connector with a multi-meter and it is showing the correct voltages on the correct pins, however,...
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On a laptop are voltage input and voltage rating on a battery the same thing?
I need to replace the battery in my Samsung Notebook model #XE501C13-S02US. The label indicates input as 12V. When I shop for a battery for this model they all list a rating of 7.6V. I suspect we're ...
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Inexplicable intermittent buzzing/hissing noise coming from PC at idle, already replaced components
Very annoying intermittent buzzing noise coming from my PC at idle. I think it's coming from the PSU area, but I'm not sure. I'm certain it's not coil whine either.
VIDEO CLIP OF THE NOISE
...
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Can a PSU handle nanosecond power-outtages?
My GPU has recently died, and I got to wounder why. I have been having PC shutdowns and bluescreens over the last 5 years. I noticed at some point, that these often happen when someone turned on a ...
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Can a loosely connected PSU damage a laptop?
is it a bad thing that the cable connects to the power adapter block in a laptop power supply comes loose and is left alone while the laptop is under use (as shown in the picture)? I am worried it ...
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Full Format New 5 TB WD HDD external after 95% there is power outage
Full Format New 5 TB WD HDD external after 95% (after 60 hours of format) there is power outage so it fail to finish then i power on the laptop then use quick format to do format. Should i be worry if ...
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Possible faulty PSU?
I had power ran out on me on Sunday while the PC was on and since the the OS (Windows 10) kept losing power as soon as I put stress on it. Not shutting down, losing power and then rebooting. I looked ...
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Dell Optiplex 3020 Motherboard randomly loses power while running
I have a dell optiplex 3020 which has 8 pin power connector motherboard , dell brand 81 motherboard, but few months back my motherboard was suddenly droping power from motherboard and without any ...
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Two recent and (probably) working WD RED disks not detected by BIOS
I used to have a working NAS with the following four disks, all Western Digital Red :
2 4TB disks from 2013
1 4TB disk from 2019
1 4TB disk from 2021
The NAS was fully functional, and all disks ...
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My pc reboots unders stressful tasks
PC Specs:
Motherboard: Huananzhi X79
CPU: Intel Xeon E5 2670
GPU 1: Nvidia GTX 750 Ti
GPU 2: AMD Radeon RX 580
RAM: 32GB (four modules)
Storage 1: 512GB NVME SSD
Storage 2: 750GB HDD
Power supply: ...
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PC Not Booting on First Power Button Click
Recently built a new desktop. Has had this issue since day one where the power button will not cause a boot the first try. I end up having to hold it down and pray it turns on each time. I took some ...
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What could be causing this erratic power/voltage behavior with USB ports on a desktop PC?
In short, I am having issues with what looks like to be power management of USB devices by my computer. I have had the following symptoms pretty much since I bought it in November 2021.
When I connect ...
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Desktop is power looping. Will isolating PSU help me find the cause?
An older desktop is power (boot?) looping. It will power up for about 2 seconds, some fans will work then it powers off for about 3 seconds and then powers up again - goes through this loop for a ...
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HP server turned off for unknown reasons. I could reach iLO once, but not anymore. What happened?
My HP Server (MicroServer) turned off for some unknown reason.
However I could reach iLO (version4).
With iLO, I could navigate to "Power Management → Server Power page" (or similar, I don't ...
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Computer is frying all USB devices that are connected
My computer specs are as follows. The computer is almost 1 year old. It is custom built:
Motherboard: ASUS h510m-a
OS: Windows 11
PSU: EVGA 500BR
In the past hour, I have connected multiple mice and ...
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Dell Latitude E5450 runs (Minecraft) better on battery
I have a Dell Latitude E5450 (Windows 11, Intel Core i5-5300U, Nvidia GeForce 830M, 16GB) and have noticed that in sometimes it runs better on battery than plugged in, specificly playing Minecraft (...
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Laptop dead from overvolted usb-c
Laptop is EVGA SC17
Usb-c 3.1 (non thunderbolt)
Battery 3.7v 550mah
Ok so i stupidly was hotwiring a battery to charge via my laptops usb-c port, I know i should have used my powersupply or even a usb ...
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Server randomly shutsdown and blows fan at full speed with no video output
Specs
Model: HP Z230
CPU: Intel Xeon e3 1230 v3
RAM: 1x8GB DDR3 Non-ECC RAM
GPU: Radeon HD 8570
NIC: Intel 82571 Dual Port NIC
Storage: 1x128GB SATA SSD, 1X1TB 7.2k RPM HDD
The problem
It randomly ...
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PC makes constant loud clicking sound after 30 minutes of sleep
Summary: Newbuild PC makes clicking sounds after 30 minutes of sleep.
Newbuild Intel Nuc Extreme 13. Works perfectly, however after 30 minutes of sleep it starts making loud ticking sound. It seems ...
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How to sync AIO cooler to fan to motherboard
I am pretty new to hardware and I’m currently trying to connect my AIO cooler with my other fans to the motherboard but unfortunately when I tried to change the RGB color, the fans and the cooler are ...
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Computer is on, but no display, stuck on DRAM
Today, I was reseating my GPU (Radeon RX Vega 56) after having to readjust a component in the pcie slot under it. I reconnected everything turned on the PC and nothing. LEDs and Fans boot up, but no ...
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How to get the UPerfect portable monitor to work with a computer
I've connected it to my laptop but when I turn up the brightness more than 50% using the on screen display the monitor powers off and I cannot turn it on again.
As soon as I turn on the monitor it ...
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HDDs disconnecting with a loud beep - Faulty motherboard?
I'll make this as short as possible.
Setup:
Mobo: Gigabyte B550I AORUS PRO AX
CPU: Ryzen 7 5700x
GPU: EVGA RTX 3060
PSU: Corsair SF750 Platinum
Storage: Crucial MX500 250Gb
Storage: Samsung 970 ...
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PC intermittently not starting
PC intermittently doesn't start.
When I turn it on the fans/lights come on but nothing happens - the screen remains black and keyboard lights (e.g. scroll lock) don't active. There's no beeping. To ...
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Is it possible to limit the current draw through the charger of an Asus laptop?
My laptop's charger broke, and I have been using a borrowed charger as a replacement while I wait for a warranty replacement. The original charger is 120W (20V, 6A) and the borrowed charger is 65W (19....
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Can I use power cord from old psu to new psu of same brand(Corsair cx650m to Corsair HX 750)
I bought a new Corsair HX 750 psu recently and found out that the power cable that comes with the box has UK style 3 pin. But I have Indian style 3 pin connector to wall. Can I use the power cord from ...
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Clearing confusion about no-break power requirement
I'm considering purchasing a no-break for my Intel NUC8i7HNK. I'm looking at a model that says that the power required by all connected appliances shouldn't exceed 600 VA (same as W, I suppose). The ...
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I accidentally connected CPU2 -P8 to ATX 12V is my mainboard going to be fine?
I accidentally connected CPU2 -P8 to what supposed to be connected to CPU1 -P4.
My PC did not boot and that is how I got aware of the issue.
After connecting the right 4 pin connector the system ...
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Connecting 3080ti to PSU
We have a custom built desktop with a Supermicro x9dai board, and an evga 1000g PSU. It has 6 8 pin VGA slots. PCIe 3.0 x16.
We also recently just bought a 3080ti, which has 2 8 pin plugs, and it ...
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Plugging laptop, Desktop PC, Iphone etc in reverse due to 2 plug pins with same size
If you have a 2 pin laptop charger and a 2 pin wall outlet and plug in your laptop into the charger and the charger into the outlet upside down due to the 2 pins on the plug having the same dimensions ...
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How can I run a Windows 11 Lenovo laptop for the longest possible time on a portable power bank?
I have a Lenovo Ideapad3 running Windows 11 which comes with Lenovo Vantage battery conservation mode where it only charges the laptop battery to about 50 or 60% while plugged in. I do this and then ...
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Dim horizontal lines in PC LED monitor when any external active device is added and activated
e.g. 2nd led monitors or external active speakers do that. It's not disturbing but I'm worried that it may cause damage to any of the devices.
Double-checked all internal and external wiring and all ...
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Desktop PC won't turn on, motherboard light is on
Background:
Desktop PC was working last week. I moved/hid it to prevent it from being stolen in case someone broke into my house as I was away, now it won't turn on.
Problem description:
computer won'...
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