Questions tagged [power]
Electrical power is essential to the operation of any computer and any of its components or peripherals.
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Is there anyway to stop charging when laptop battery is < 80%?
I'm a Linux (Debian) user. I work on my laptop full days. Most of the time I forget to remove the laptop charging plug. I'm looking for something when my laptop battery is more than 80% it will ...
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Asus T100 won't boot - LED blinks 5 times
I've been using my ASUS T100 for more than 5 years. Today, I started it as usual, but only noticed the LED blinking 5 times. When charged fully, it blinks 5 times in white and when unplugged, it ...
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Computer partially waking from sleep every hour
From powercfg /sleepstudy:
Over long periods in modern standby, my laptop briefly transitions from sleep to screen off and back again almost exactly every hour. I'd like to stop this from happening.
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Attaching USB speaker killed laptop but later it worked again. Can fuses reset by waiting or removing battery?
Trying a USB speaker on my laptop caused it to power off and not power back on. I thought it blew a fuse or a chip and would need to be repaired.
Some people who are not computer techs gave me random ...
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Laptop charging indicator switches between fully charged and charging
I have a HP 15 bs024nq that is 2 years old, I got it in September of 2018.
It started happening a week ago. When I charge my laptop(no matter the operating system, it happens on GNU/Linux and Windows, ...
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SATA power connection on motherboard seems to be a 6-pin male. What kind of connector is this?
I have an HP PC that is missing the power cable for the HDD. It seems that the SATA power port on the motherboard is a straight 6 pin male connection as shown below:
What is the name of the connector/...
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Self-build pc won't get power
I'm trying to build a pc with only brand new bought components. After following everything by the guide of the motherboard, the pc won't turn on (pushing the button does nothing, not even a fan is ...
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Why did the majority of options of Advanced Power Options disappear?
I've recently noticed that the majority of options have disappeared from the Advanced Power Options menu. For example, this is what it should look like:
However, this is what it looks like instead:
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What tools and kernel features some desktop environments use, to monitor battery level
I have noticed some strange behavior of battery charge indicator in Gnome and Cinnamon. When you plug charger into laptop, it updates battery charging status(charging/discharging) only when battery ...
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Laptop not charging consistently on Windows but does on Ubuntu
Setup: I have a Lenovo T440s running Windows 10 which requests 20V and 2.25A/3.25A and a charger providing 20V and 2.25A.
I have been having this problem for a while. Essentially, when I plug in the ...
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Windows 10 Notification: PC isn't charging via USB-C, even though Power Supply is connected
I have recently bought a Lenovo P53. Since I needed docking station and thought that the Thunderbold3 dock was to OP for me, I bought the smaller USB-C dock.
I know that you can't power the P53 (...
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Windows 8 - Missing 'Balanced' Power Plan
I've seen a similar (although not the same) question here Default Power Plan options apart from Balanced have disappeared, how to restore them? but I did not understand what to do. Basically, when I ...
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Desktop Computer not starting up after installation of Wireless Card
I'm walking my friend through installing a Wireless Card in his computer that I just built him, but for some reason it isn't booting.
I've tried unplugging, holding power button for 30 seconds, ...
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Is it a dead motherboard, or not enough power? (2008 Intel Skulltrail D5400XS)
I'm hoping that someone has real-world experience starting up an Intel Skulltrail D5400XS system, with less than the Intel-recommended 1,000 watt power supply. And/or, real-world experience with ...
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is my laptop too powerful for airplane use? [closed]
I have a laptop that pulls 20V 6.75A 135W and I have never once been able to successfully charge it from a plane.
Another laptop, however, has always charged without issue. That laptop pulls 20V 4....
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Weird power/shutdown behaviour with a windows 10 laptop
I've got a Windows 10 Pro Dell Latitude e7440. I'm having a few power issues, which appear to have something to do with shutting down.
Full Description
Every time I hibernate my laptop, and turn it ...
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Lenovo T420 keyboard power button issue
I own a lenovo T420 and I need to power it up but the keyboard power button is shot. How could I fix this or workaround it? It is very important that I get it on. I am using a key board from a T410. ...
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USB device powered down, probably by Window's selective suspend, when connected though a USB hub, but works when connected directly
I have a setup where a user have connected an older Mousetrapper device and a keyboard though the USB hub integrated in a desktop screen. However, after a few minutes the mousetrapper is shut down, ...
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USB connected mouse stops working randomly [closed]
Lately my mouse stops working all of the time and then starts working for a bit again. This is the same no matter what mouse or USB port I use. I have searched stack overflow for a solution but found ...
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Dell Server Power On after power outage
I have a Dell PowerEdge R900, No UPS direct power connected, I do have it connected via a power strip(Surge Protector). but issue happens either ways
Issue
Server was powered off
I had a one second ...
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Laptop with power problems now with unresponsive keys
I became an owner of an HP EliteBook 8460p recently and had an issue where the power button wouldn't work for turning on the computer. I use the "QuickWeb" button which can turn on the computer and ...
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My PC does not respond to power on switch immediately though USB ports seem to receive power [closed]
I have gotten a PC assembled for my home use.
Since a few months, I am experiencing a strange issue while powering the PC on.
When I switch on the wall button of the machine (in which the power ...
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Dual Monitor signal issue when Macbook not connected to power
In my current setup, I have 2 Dell U2715H monitors plugged into my Mid 2015 Macbook Pro laptop via 2 mini DP cables. Additionally, I have a Corsair k95 platinum keyboard plugged into the Macbook via ...
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Motherboard not lighting up when PSU is switched on
I have an ASRock Fatal1ty Z370 Gaming K6 motherboard which is a quite recent board. While I was using my computer, everything shut down rapidly. At first, I thought it was a power blackout in the ...
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Can I leave my computer turned off for several years?
I'm planning to work abroad for several years and I can't bring my trusty PC along. I'm gonna buy a laptop and I'll possibly only come back home after 5 years. So my question is:
Is it OK to leave my ...
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How to disable a virtualbox nic when not in use to stop it sucking power?
I'm using powertop to see what's eating battery.
A massive chunk is apparently going on nic:vboxnet0 which I do need when I fire up my VMs, but when they're not in action, I don't need to be spending ...
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Name of Power Cord Attachment Piece
I recently purchased an Acer laptop and the power cord uses a piece that is different than a Velcro strap to wrap the cord up. I can't figure out what the name of this piece is. I've included an image ...
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HP DL360 G7 - shutdown / Power loss whilst idle
I had purchased a DL360 G7 for a home lab that i was looking to put together. I have a strange issue whereby the server appears to shutdown / lose power whilst its idle.
Specs 2 x 5650 CPU 24Gb RAM 3 ...
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Power consumption in Windows 10 and Linux
How does Windows 10 compute the percentages of power used by various applications and hardware devices without any external power measurement device?
It's a fascinating problem to be able to ...
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Is there a way to recover directory from (low power?) disconnected drives?
Let me first describe the issue. I work on a Macbook Air and have a pendrive permanently connected for largish work data. About once a week it happens to me that power gets low - after I connect ...
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Desktop PC doesn't switch on, power cuts
Today I have quite a big problem with my HP Pavillon Desktop pre-built computer.
So, what happens?
Well, when I press the power button, nothing happens. There's a led light on the back of the ...
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Effect of power outage on power supply connected to surge arrester and voltage regulator
I have a computer that connected to an automatic voltage regulator and an a surge arrester. The power supply unit is set to automatic power recovery so that when there's an outage, it will start the ...
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How to get my GPU to work with my display?
I get no BIOS on the screen, just a black display.
The screen was working with my desktop on integrated graphics for about 4 months, running Ubuntu, before I added my GPU.
The screen is an Acer, ...
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How to make my ubuntu laptop not to use the built-in battery?
I have a Lenovo y50 which I use all day and night. It is plugged in most of the time.
I was wondering if it is possible to make my laptop not to use the battery sometimes and get it out of the ...
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Laptop - always on
I would like to make my laptop always on, even after power loss.
On PC it's simple. I used to enter the BIOS, then Power Management Setup and set the option Restore on AC/Power loss to Enable. ...
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How can I map the power key on the keyboard to shut down the laptop?
I have recently bought a Lenovo IdeaPad 520 notebook with Windows 10 Home (x64) pre-installed. This laptop does not have a dedicated power button off its keyboard. That is, the power button is ...
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Force Windows 10 to install feature update via command-line
I have a device that is ready to install a Windows 10 Feature Update (1607 from 1511).
The update was downloaded via Windows Update and is currently sitting resident in the system somewhere, waiting ...
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G751JY AC charger disconnects while gaming.
So a few months ago my battery died, which in turn made my computer turn off while gaming. It seemed that the computer (GPU?) needed more power than the AC could give causing it to shut down.
So I ...
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Turning MSI GS40 without pressing power button
I'm having problem with the power button, and trying to turn on the computer with some other methods.
My computer is MSI GS40QE.
I've tried to turn on the computer with usb keyboard which has power ...
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Does the new performance slider in Windows 10 insider builds work?
When I left click on the battery icon in the task tray of Windows 10 Insider Preview, there is a new slider control labelled "power mode".
I had read that this doesn't work, and is a GUI module only ...
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Can I power two GPUs (2x 8pin, 1x 8pin) with two PSU cables?
I want to add one more GPU to my system. This GPU requires an 8-pin PCIE power connection but I'm all out. I am currently powering a GPU with two 8-pin cables each of which terminates in a 6-pin plug. ...
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Is it normal to get power supply surge when lightning cuts the electricity?
So I'm a bit worried because my previous MoBo (a Gigabyte) died and I just bought a new MoBo. This new MoBo is an Asus. Last monday (now we are friday) I've let my computer opened to be able to use it ...
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Acer Aspire Easystore H340 Has No Power
So, I turned off my Aspire Easystore H340 last night now it has no power (I know its over 10 years old).
No lights, fans, etc when pressing the power button.
I took it apart and put back to together ...
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Computer immediately turns back on after "Shut Down" or holding power button, after editing registry
I have 4 PCs which I'm 'setting up' ready for a client. I created a batch script to set a load of values which need setting so that I can save time by not having to do it manually. (See batch script ...
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identify 32v dc out power connector
I am curious to know what this 32vdc power connector commonly in purple color used to power hp printers is called?
Whether it is part of any national standards worldwide? Try hard as I may on google, ...
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Laptop running Ubuntu powers off randomly
I have Asus Zenbook (UX305C) with Ubuntu 16.04 on it. The computer randomly powers off usually after a few hours. I was servicing it in an authorized Asus stand and they told me it is an OS issue. ...
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How to check if a laptop's HDMI port is powered (for VGA adaptor)?
The Lenovo Y50 (Win 8.1 Pro) only has an HDMI port and I will be giving a presentation where only a VGA port is available. I can get an HDMI to VGA adaptor that does not need to be powered (via micro-...
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Battery fails to calibrate
Some time ago I bought an aftermarket extended battery for my laptop (HP Probook 4540s). First things first I tried to properly calibrate it — full charge and then discharge. However when the counter ...
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UPS Sizing with large PSUs
I have a couple servers in my garage running ESXi. Each server has a 1000W gold rated PSU which I bought second hand from a miner. They work great and were pretty cheap. These are not super powerful ...
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possible to disable the Power key on Mac when it's turned on?
I'm looking to be able to disable the power key on my mac after it's been turned on. I've damaged my logic board and when the button gets pressed it crashes my mac... (can elaborate if anyone is ...