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Questions tagged [power]

Electrical power is essential to the operation of any computer and any of its components or peripherals.

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How to ensure that the computer doesn't beep when put in sleep mode?

Putting this computer into sleep mode gives faint but noticeable beeping sounds synchronized with the blinking light. System and hardware info: Device name DESKTOP-GG6AA6L Processor Intel(R) Core(...
Nicholas Saunders's user avatar
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Can I swap the power cables for the motherboard at the PSU socker?

The last time I built a PC was when the Pentium was the new hotness. However, I have decided to build my own instead of buying a new PC. I'm a bit confused with this modular power supply cable ...
Swisher Sweet's user avatar
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Temperature vs Power has strong positive correlation

So, I just bought super high RPM fan for my laptop, it's worked fine, it reduced temperature. I noticed multivariate time series real time graph between temperature and power that they have similarity ...
Muhammad Ikhwan Perwira's user avatar
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How to disable Win11 disable throttled down or disable cpu limitation

My laptop is lenovo yoga x1 with Win11. Due to laptop's charging module failure, the battery would not charge up, but I want to use it with plugin AC. However, the cpu stuck at 0.38GHz low frequency. ...
user3867146's user avatar
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Remote keyboard with USB dongle under Linux: how to detect keyboard is ON?

So, problem is simple: I use a keyboard in an linux app (developed in Go) and am trying to figure which keyboards are connected, through Bluetooth or USB. Using a combination of listing event files ...
Phil H's user avatar
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Is anyone aware of a way to get power to internal accessories in a Dell Precision 5860 Tower?

I suspect I know the answer, but figure it is worth a shot anyways... Is anyone aware of a way to get power to internal accessories in a Dell Precision 5860 Tower? It's a very nice setup if all you ...
Matthew Adair's user avatar
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1 answer
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Why do PCs and gaming laptops require graphics cards when phones can render without them?

Can you explain why PCs and gaming laptops have large graphics cards with high power usage when phones can render without them?
theonerishi's user avatar
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Display turning off causes power failure

I built a new pc and after adding the GPU, noticed that pc loses power shortly after display is turned off by power options due to inactivity. I used the same pc with the igpu only for a week where i ...
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Laser printer popping AFCI circuit breaker

I recently bought a Brother laser printer, plugged it into an outlet previously used for a laser printer, and it popped the house circuit breaker that the outlet is on. The circuit breaker is an AFCI ...
Dolly's user avatar
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1 answer
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Laptop is not charging when plugged and very laggy

I accidentally connected a Lenovo charger to my Dell laptop. After I realized this, I disconnected and connected to its Dell charger but now it doesn't charge. The laptop still works when plugged in ...
Asmat Ali's user avatar
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How do you determine DC polarity when the device does not specify?

My device is the ASRock Vision 3D Series mini PC. It does not have anything denoting polarity on the outside of the device itself. And from what I can find, it does not tell you on the product page or ...
Foxer's user avatar
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Computer not responding to power changes after hardware upgrade

I upgraded my computers CPU/Mobo/RAM/GPU, and afterwards the power options are being strange. It won't fully shutdown, after Windows stops, and there's no video output, the computer wont actually ...
TMH's user avatar
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After unplugging my PC from the outlet, sometimes it won't boot for a long time

Before I go to sleep, I unplug my PC from the outlet, due to concerns about power spikes or something of the sort frying my computer. However, sometimes, when I wake up and plug it back into the ...
davi's user avatar
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Lenovo P51s ThinkPad laptop continuously cycles power on and off. Why is this happening and how can it be fixed?

This morning, when I tried to turn my Lenovo P51s ThinkPad laptop on (it was on my desk, untouched from where I'd left it last night), it started the process (keyboard lights up, fan turns on), then ...
Eugene's user avatar
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Laptop power button not working but battery discharge pinhole button is starting the computer, what might be the issue here?

I have an Acer Aspire A515-51G, the issue is suddenly the power button has stopped working, the battery is charging, but the pinhole that they have given; pressing it, actually starts the computer; ...
Yanjan. Kaf.'s user avatar
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1 answer
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Windows 11 PC waking up from hibernation with unknown wake reason

This problem has been driving me mad for the past few months. Almost every time I put my computer into hibernation mode for the night it immediately boots back up. After a few times, it will ...
luftwaffle's user avatar
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Sabrent 7-port USB powered hub somehow doesn’t have enough power?

System Specs: i5 13600k GTX 4080 32GB DDR5 RAM 2TB M.2 NVME 1000w PSU Windows 11 (updated to latest 23H2 (KB5034204) ) I have bought this Sabrent powered USB hub from Amazon, twice now. The first ...
BeerHuntor's user avatar
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USB Hub with USB-A male input, will it damage my computer?

I bought this hub from temu.com recently and I actually really like it. I can leave it clamped on my desk with all my peripherals plugged in, and then just connect 1 wire when I need them. It doesnt ...
Technobulb's user avatar
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1 answer
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Will this configuration supply the new gpu (Nvidia RTX 4000 ada) with too much power and damage it?

I just purchased an Nvidia RTX 4000 and it came with a 16(12+4) pin to 8 pin pcie adapter. Unfortunately it is only 4 inches long. The way my tower is configured it will not reach anything but the ...
M Stone's user avatar
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1 answer
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How to know if a charger will be compatible with Lenovo T15?

I don't have my charger for Lenovo T15 Gen 1. I bought a temporary replacement until I get it back. But, with the replacement, I get a message on startup that the charger has insufficient wattage and ...
Tomáš Zato's user avatar
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PC won't start & hearing some weird noise from psu power socket

My pc won't start, no lights at all, as if it's not receiving any power. And when I re-fitting the cable in my psu, I keep hearing this in its socket I forgot the model & brand of some of the ...
Paulo's user avatar
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How to calculate the combined current of all USB peripherals

I recently purchased a (non-powered) USB 3.0 data hub with four ports. When I had a cursory glance at the documentation that came with it, I saw it says connected devices should not exceed a combined ...
alstr's user avatar
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Dell laptop having issues with charging. Recognises charger and starts charging automatically and then doesn't recoginse charger and won't charge

I have a 7 year old dell vostro and this issue arose suddenly when one day I noticed that my laptop was lagging significantly. I went to the task manager to see the issue and in the performance tab ...
Ali Mustafa's user avatar
4 votes
2 answers
1k views

USB C charging on Dell Inspiron laptop: OnePlus 65W phone charger

I have a Dell Inspiron laptop with a USB C port. The normal charging is 65W adapter via the Dell power (charging port). If I connect this to my OnePlus phone charger which is also 65W somehow it does ...
curious_cat's user avatar
1 vote
0 answers
514 views

Win 11: What performance characteristics does the "power mode" setting change

(1) In Windows 11 there's a new settings item System -> Power & Battery, which under Power mode gives 3 choices: "Best Power efficiency", "Balanced", and "Best ...
1NN's user avatar
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1 vote
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Best practice with NUT in multi server, multi PSU, multi UPS setup?

what is the common practice in powering and configuring multiple servers with multiple UPS when each server has two PSU? Let's say I have 3 racks, each with it's own UPS and set of servers with two ...
Ján Stibila's user avatar
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1 answer
174 views

My computer runs fine on inverter power but can't turn on from off state. Will using an UPS between computer and inverter fix the issue?

A 900 watt sine wave inverter (with battery) is connected to mains. The PSU of my computer is 1000 watts. When there is power outage, my computer runs perfectly fine. But if it is already off, I can't ...
aste123's user avatar
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Power supply problems

I recently had a laptop that would not boot a range of things. It would not boot the existing installation of windows for the SSD. It would not boot Ubuntu from a USB. It would not boot the OEM ...
megaman's user avatar
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1 answer
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How to get Quadro RTX 6000 working in Dell EMC 8440 chassis?

I need to install and power the (circa 2018) Quadro RTX 6000 (QR6) GPUs in a Dell EMC 8440. The Dell 8440 uses the "Special 14 Pin to 8 Pin PCIe Cable" for GPUs, but because the QR6 is a ...
lettucebhappy's user avatar
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0 answers
141 views

Make Windows 11 sleep instead of shutdown during power outage

Just upgraded to windows 11 and noticed that during a power outage the PC shuts down. With windows 10 the PC would sleep (or hibernate) instead of shut down and when the power was on again I had all ...
Bubu's user avatar
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How do base and turbo frequencies affect core utilization in multi-core CPUs?

I'm trying to understand the relationship between base and turbo frequencies in multi-core CPUs, specifically regarding core utilization. My CPU has a base frequency of 2.1 GHz and a turbo frequency ...
sako's user avatar
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1 answer
385 views

CPU Power throttling when gaming

I have a windows 11 laptop. When I stress test my CPU it draws 28 watt constantly. But when I open up a game it only draws 15 watts. Because of that I get bottle necked on CPU. My CPU frame time is ...
mustafa candan's user avatar
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1 answer
79 views

Windows 11-intermittent interruption on peripherals/lights

This happens at seemingly random intervals, but I usually notice it while gaming, not so much with other tasks. First, I notice my mouse, headset and my mic stop working, then all the lights on my PC ...
Anthony's user avatar
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1 vote
1 answer
3k views

Dell does not power down when long-pressing power button?

I have a Dell Precision 7770. I performed a UEFI (BIOS) update. It hasn't done anything since then. In the Technical Guidebook it says, Power button with optional finger print reader Press to turn ...
Evan Carroll's user avatar
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Dell laptop not turning on and charging suddenly in middle of my usage

I'm using dell inspiron laptop without bezel and lcd screen stands in support of lcd back cover only. I typically use my laptop sideways on bed so I could lay down and watch. This time while I'm using ...
itsdevthen's user avatar
0 votes
1 answer
212 views

Dell Inspiron 15-5558 - A battery with low health is detected, charged, but not used

I've been using Dell Inspiron 15-5558 laptop for more than 8 years without replacing the battery (cause I've been mostly using AC charger only) and today I've encountered an issue when the laptop has ...
StafordDev's user avatar
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0 answers
987 views

How to uninstall Adobe Acrobat Reader 32-bits without user confirmation or window confirmation

My goal is to switch from Acrobat Reader 32-bit to 64-bit via Intune. Since the 32-bit version of Acrobat Reader currently installed on computers wasn’t installed through Intune, I can’t remove it ...
Mart__'s user avatar
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1 answer
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Keep USB C & HDMI plugged into Dell Monitor all the time?

I have the Dell U2327QE monitor, and I use it for both Mac and Windows. It's some work every time to plug the HDMI or USB-C into the monitor, instead I want to keep both cables plugged into the ...
Kim's user avatar
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0 answers
274 views

Autostart is not working after power outage

I have NVIDIA RTX 6000 Ada graphics card and Asus PRO WS WRX80E-SAGE SE motherboard in my workstation. I enabled Restore AC Power Loss on BIOS settings. When I power off and on the system using PSU ...
smtnkc's user avatar
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0 answers
923 views

Laptop battery suddenly goes from 0 to 100 and vice versa

My lenovo(ideapad 510) laptop's battery behaves strange. It is a new battery. The battery level was 100% when i unplugged the adapter. Shortly the laptop was closed suddenly and didn't work without ...
Gakovi's user avatar
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1 answer
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Windows laptop wakes up automatically from sleep

I am unable to put my Lenovo laptop in sleep. When I put it to sleep, it wakes automatically up within a minute, without me doing anything. I checked even viewer. Below are the screen shots. It says ...
Mahesha999's user avatar
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117 views

Why can i plug in an ethernet cable from the wall directly to the 1 gbps socket in my pc but not the 2.5 gbps one?

Why does my Ethernet connection work when plugged into the 1 Gbps socket on my PC and directly into the wall, but not when connected to the 2.5 Gbps socket, using the same wall outlet? Is it because ...
PHV's user avatar
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0 answers
295 views

Replace Laptop Battery With Power Supply

I have an old Macbook Pro 2013 UK version, and it's broken. I have a feeling it's the charging circuit for the battery that's broken, and that everything else works fine. I'd like to have a go at ...
William Faust's user avatar
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0 answers
323 views

100w USB-C to DC power adapter charging issues

I've been encountering some issues with a custom charging setup for my Razer Blade 15 laptop. My blade is a 2020 model that does not support USB-C charging. I wanted a more compact solution than the ...
Beckett Harriman's user avatar
0 votes
1 answer
521 views

windows 11 "low battery action" is missing "sleep" option

my laptop able to go to sleep just fine via sleep button, closing the lid, or timer. but the windows "low battery action" is missing "sleep" option. so it only got this option: do ...
orangpelupa's user avatar
1 vote
0 answers
135 views

Power Display over USB-C

thanks for reading and trying to help me. I recovered an old laptop screen and I want to transform it into a PC Monitor. To do that i will use an LVDS to HDMI/VGA kit. (This one) I was wondering if i ...
Doliprux's user avatar
1 vote
1 answer
419 views

Why is there a seemingly big difference in power supply input and output watts?

Looking at a power supply like: I notice there seems to be a big difference between the AC input watts(240V x 5.5A = 1320W) and DC output watts (860W) I read on this answer that Virtually all power ...
RoelfMartins's user avatar
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0 answers
1k views

PC randomly shutsdown with a kernel power (id 41) critical error

I've been having problems lately with my PC randomly restarting itself regardless of the current stress it's facing. I've been monitoring the temperature of my cpu with Core Temp and I haven't seen ...
Eleuis's user avatar
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0 votes
1 answer
68 views

Laptop power button seems to be disconnected

I've always had this issue with my laptop where it needs the power to be drained from the motherboard before it can start normally (7 year old laptop). And I've learned to do the whole, pressing down ...
NotAProgrammer's user avatar
0 votes
2 answers
171 views

How can I manipulate hundreds of thousands of rows of data without it freezing in excel?

When using an add in function in Excel to compute values for hundreds of thousands of rows of data, Excel will start freezing or showing "0" values. The add in function allows me to ...
anon1212's user avatar

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