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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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30 views

Computer draws more watts when electricity in house isn't stable?

I have an i7 5960x (8-core, 16 threads) and two GTX 970s that are all running at full load 24/7. The total system power usage is typically around 450-550 watts when everything is under load. It has a ...
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How many SATA Drives can be safely connected to SATA power connector?

SATA can handle up to 4.5A https://imgur.com/LQhYMPb However a 3.5" drive typically uses power from both the +5V rail (for its circuit board) and +12V rail (for its motor) from the PSU (source) ...
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152 views

How to autostart notebook on electric power is connected?

Have a arcade machine and a hp elitebook (8440p). How to start notebook automaticaly when plug the energy?, I want to avoid soldering the part of the power button to have an external button, I prefer ...
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Windows 10 shuts down/powers off randomly in sleep mode for no reason

My Windows 10 laptop (a Dell Inspiron 5491 2n1) shuts down randomly during sleep. It does not hibernate, nor perform a clean shutdown, it (seems to) simply power off. This also deletes all saved work. ...
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Is It possible to use a 5V/3A power supply to only power a PD USB Type C Hub and not the laptop?

Situation: I require a powered USB hub because I need to expand a Thunderbolt/USB 3.0 Type C port to a few USB 3.0 Type A ports for a few portable hard drives. Problem: It is almost impossible to find ...
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Why is a USB-C meter not bi-directional? [closed]

A USB-C measures current only if plugged in one direction or otherwise reads 0A current. If I connect two meters in opposite direction, one meter measures current but the other measures 0A current. ...
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1answer
31 views

Adding a power button to laptop for using as SBC

My laptop power button is included with the keyboard. And when I remove the keyboard from the keyboard port of motherboard, there is no way to start the laptop. The reason I want to remove keyboard is:...
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1answer
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External HDD Spins Down Every 30 secs - Can't find a solution to stop this from happening

My Seagate Expansion Desktop External HDD keeps spinning down after just 30 secs of inactivity. First off I know there are already a lot of posts on how to stop this from happening and believe me I ...
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48 views

Toshiba laptop turns on then off after 5-10 seconds, with or without AC charger or battery connected

My relative has a Toshiba Satellite C50-A-19T laptop with an Intel Celeron 1005M. She left it for a bit to do some work, with the laptop just sitting there with Chrome open. Then, Windows decided to ...
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1answer
19 views

USB port recurring power interference

I'm investigating a noise interference (high pitch glitches) that is occuring on my USB powered audio interface (Motu M4) every ~60 seconds (and last around 2 seconds) using a Linux computer (Manjaro, ...
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Wake on Lan not available?

I wanted to use Wake on LAN feature on my notebook, but in order to do that i needed to turn that on in UEFI. Turns out, I don’t have any ACPI/APM Configurarion option in Advanced settings. Does that ...
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1answer
104 views

Monitor used USB bandwidth in Win10

There are a lot of threads here about monitoring usb bandwidth, however none of them helped me, so that I post my problem here (device manager doesn't show me the usb bandwidth...): I have a Lenovo ...
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Does SSD still go into idle mode if booting OS from it?

I am trying to find out whether a SSD will go into idle despite linux (or any OS for that matter) is running on it. I would think a SSD only goes into idle if used as a secondary drive and have no ...
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How to interpret the GPU wattage reported by softwares?

To mine ETC, I'm going to split an 8-pin PCI-e connector and power an AMD RX 570 and its riser. In order for this to be completely safe for continuous use, the total power consumption of the card must ...
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Task Manager is showing that ,specifically video games, are using too much power

GPU: ASrock Challenger RX 5600 XT, PSU: Thermaltake Smart series 600 W. I recently bought a pre-built budget gaming PC. For some reason, and only when playing High-CPU taking games (CSGO and Siege), ...
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How to properly insert/eject a drive from a hotswap bay?

I have a SATA disk I want to use into an ICYDOCK bay (hotswap capable and hotswap enabled into the BIOS) that has a power button for the disk. When I want to insert the disk on a running windows 10 : ...
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The second HDD constantly awaking on Win10

I have an ASUS Vivobook x510, running Windows 10 [build 18363.1500], and am looking for advice on how to make a WD Blue 2TB secondary HDD sleep when I'm not using it (I mainly use a small system SSD), ...
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1answer
31 views

GPU crash, possible power issue?

I am having trouble with my new GPU, and I think it's a power issue. The setup: PSU Mars Gaming MPII 550, CPU i5-10400 The problem: I installed yesterday, for the first time, my GPU GTX 970. The PSU ...
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0answers
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Graphics card power consumption regarding PCI power and 6-Pin power [duplicate]

I am aware that the PCI-E slot can power up to 75W and so can the 6 pin molex power cable, I was wondering if the power draw is split evenly between both the PCI and 6 pin cable, for example would a ...
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1answer
33 views

How to measure laptop current draw?

I'm interested in quantifying how much my laptop costs to run (as I know the kWh cost). However, I need to know the wattage of my laptop in standby or usage mode. Is there some reliable software that ...
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1answer
56 views

Keeping laptop charger plugged-in, while charging stops at 80%

I have an Acer Gaming Laptop, it comes with an inbuilt feature, that stops charging the battery when the capacity is above 80%, it can be found under Acer Care Center named as Battery Charge Limiter. ...
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1answer
27 views

Surge protector behaving strangely

I just bought this surge protector which has the master/slave function, so that it disables some plugs (2 monitors and 2 speakers) when I turn off my PC. Everything is working fine except for one ...
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Windows 10 after update not locking after auto login (permanent grace period)

Continuing from Auto-lock delay after login and also tried the answer https://superuser.com/a/1096454/676385 LONG STORY: The scheduled task helps and is faster than using startup commands, there's ...
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Laptop booting only while plugged and keyboard doesn't work either after HDD replacement

Recently I had problems with a laptop (tried to solve them in a previous thread). I managed to remove HDD and replace it with another one from another old laptop. While trying to put in the last screw ...
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does two processor of same generation i3 and i5 having same tdp have different or same peak power consumption?

Is the peak power of two processor of same generation and same tdp is different??? for ex 1135g7 @28watt tdp and 1115g4@28watt tdp. These processor have same generation. Is the peak power used by both ...
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1answer
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Trying to better understand how motherboard USB 2.0 and USB 3.1 Gen1 ports max combined APS is calculated

So, I've searched dozens of similar questions on SuperUser and they all seem to focus on MAX power output on a USB PORT and do not mention anything about the total max a motherboard will be able to ...
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MSI GV62 7RD LAPTOP WON’T TURN ON

So I placed my laptop on charge and came back to realize that it went off and power on at all. I realized the blue charging light turns on when I plug in my charger. However it doesn’t seem to power ...
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1answer
25 views

Turn off/on vs Keep running: which gives longer lifespan?

Powering off a PC component, and powering it on, are stressful events that may lower its lifespan. In my own experience, long lasting components almost never broke mid-use. Rather, once turned off, ...
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3answers
53 views

Can a power outage damage PC hardware?

TL;DR: can a planned "power outage" damage PC hardware aside from HDD/SSD (which won't be connected to the PCs) - mobo, gpu, cpu, psu, dvd, fans? (the internet says "yes it can" vs ...
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32 views

PSU plugs don't line up with CPU power on motherboard

My 650-watt power supply came with many connectors. There is a problem, however: on the left side of both 8-pin connectors, the arrangement is wrong (the roundish-bottomed and square pins are swapped ...
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1answer
46 views

how lowering tdp decreases amount of heat produced?

If there are two identical processors (ex 11 th gen 1165g7) with a single difference in its TDP value (eg. base@1.6Ghz & tdp@18watt and base@2.8Ghz & tdp@28watt) where turbo boost is 4.7ghz ...
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28 views

Desktop Tripping AFCI Breaker

I'm experiencing a problem with my desktop tripping an AFCI breaker repeatedly. It's tripped ~20 times in the past 24hrs. It occurs while I'm playing a game on my desktop, upon resetting the breaker ...
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Laptop restarts after shutdown

I have recently upgraded my Msi gs63 7rd m.2 ssd and Rams, After that it's not shutting down. Immidiatelly after shutdown it boots up again. I can only power it off by holding power button. I have ...
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1answer
25 views

Why is SSD peak power drain higher for read than write?

The graphs on this page show that the Crucial MX500 SSD has a peak measured power draws of: Read - 2.4W Write - 2.0W Why would sustained random reads draw more power than sustained random writes?
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1answer
72 views

Laptop battery indicator blinking red while green

3 incidents have happened the past week, and I need to decide fast what to do with my new battery that I bought 2 months ago, before the shop warranty expires in less than a month. I was normally ...
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How to mimic Windows power behavior on Ubuntu?

On windows when I close the lid on my laptop, it suspends. This behavior is the same as Ubuntu. However, on Windows after some time in the suspended state, it will enter a "deeper sleep" ...
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1answer
42 views

Prevent Service Sleeping Machine

I have an Asus G15 (GA503QS), and on this machine I have a service, the Asus Optimisation Service. As far as I'm aware, this service, amongst other things, prevents my battery from charging above 60% ...
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72 views

Understanding the intel-rapl in Linux

Here is the rapl interface tree provided by a Ubuntu system running on Intel I5-7200U. ├── enabled ├── intel-rapl:0 │   ├── constraint_0_max_power_uw │   ├── constraint_0_name │   ├── ...
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1answer
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How can I fix the issue that when working on battery, my laptop turns off without any notification?

I have a Sony VPCEH 2010 Laptop and Win 10 is installed. When on battery, If the battery arrives at about 30%, my laptop suddenly turns off without any "Battery Low" warning and after ...
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1answer
38 views

Is disabling GPU reasonable for saving power during non-intensive usage?

Consider having a upper mid-level gaming desktop PC that is (also) being used for casual work like text-editing, browsing, audio playback. Could disabling the GPU (via "Disable device" in ...
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1answer
27 views

Whenever I plugin my laptop's charger, screen turns brighter and I don't want it, what's the solution?

Whenever I plugin the charger screen gets more brighter, I want it to remain as it is (as it was before charging) How to get this done?
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Testing PSU 24 pin voltages

My PC is not even booting to BIOS and constantly trying to restart itself. I suspect a PSU issue but it may be the motherboard too I guess. I was trying to test my PSU with a multimeter like discussed ...
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15 views

Toshiba laptop blinks a white light for seven seconds

My Toshiba laptop blinks a white light for seven seconds and then the light goes off and the light only comes when I press the power button and it has also refused to come on.
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39 views

Windows screen idle turns off and directly on again

I have a very annoying issue with my monitors. After the idle time specified in windows power management, my two displays turn off, but directly turn on again, preventing the monitors from entering ...
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1answer
28 views

Can I see how much power my laptop is drawing from a USB-C PD source?

I've got a few USB-C chargers that can deliver power via USB-PD; a 65W charger, a 100W charger, and a hub that advertises "PD Passthrough". My laptop accepts up to 100W, which is why I'm ...
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33 views

display buttons broken, how to turn on display from windows

So, my philips bdm3270 have broken touch controls and I was controlling it with SmartControl utility that lets me put screen in to standby while watching movie on projector, but yesterday I ...
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0answers
24 views

How do I prevent my laptop from powering off when I hit the power button?

When I am working on my laptop, I usually work on the floor next to my file cabinet. However, sometimes I push my computer too far to the right, and accidentally hit the power button against the file ...
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1answer
55 views

Laptop Shuts down abruptly under load

TL:DR 7 year old laptop, new thermal paste, recently cleaned fan, disconnected battery, suddenly powering off under load. Specs: Lenovo Flex 2 - 15 inch variant i5 4210U GeForce 840M 240 GB SSD 1 TB ...
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38 views

What are the pins on the rear end of a RTX 2080 Super GPU for?

I just saw some unused pins on the rear end of my GPU and was wondering what they were and what they are normally used for. I don't know if any other type of GPUs have these leftover pins. There ...
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1answer
42 views

Windows 10 hibernates because of the battery

And by "actively" I do mean I'm typing or moving the mouse. When it happens, windows shows me a dialog box. But before I can read it, the pc is going into hibernation. I ran powercfg /...

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