Stack Exchange Network

Stack Exchange network consists of 174 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange
Join us in building a kind, collaborative learning community via our updated Code of Conduct.

Questions tagged [power]

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

0
votes
0answers
20 views

How to properly ground dual PSUs for powering extra hard drives?

My project: I'm trying to build a small storage server with some old hardware I have lying around. The motherboard I am using has 4 SATA and 1 IDE connector, all of which I will be using to connect ...
0
votes
0answers
47 views

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 ...
0
votes
0answers
42 views

Random Hardware Anomalies after accidental reverse polarity

Good afternoon everyone, I have a bit of a weird question for you. About a month ago, I purchased a used Mac Pro 1,1 (2006). I proceeded to slap a GTX 1050ti in it, install windows and everything is ...
0
votes
2answers
51 views

Can I power a PoE device from my laptop?

Sorry, this PoE technology baffles me a bit. I have a lightweight router that can be powered over ethernet; is there a way of providing the power (and ethernet connection between the router and the ...
0
votes
1answer
14 views

Does Acer have any protection on its chargers?

I was just wondering if Acer or any other laptop charger had some sort of safety to shut off when extremely hot, because if not, then I would definitely consider bringing this charger to the repair ...
-3
votes
1answer
46 views

How does Windows schedule power on's and automatic updates at night?

What technology does it use? Does it have to be connected to the internet so Microsoft can send a wake-on-lan package? I don't think so. Does it somehow schedule it in the motherboard and wake after ...
0
votes
0answers
7 views

ASUS Motherboard has a power switch issue

I had a USB overcurrent issue and in the process of unplugging that I unplugged the he adapter for the turn on switch, since it was a usb in the front near the power button. I plugged that power back ...
0
votes
0answers
20 views

pc won't wake up from sleep mode - power button wont work

I got new AMD Ryzen 2700 and Asus TUF-X470 mobo. I swapped windows HD from my old system i7. Windows works fine however when I try to use sleep mode it goes to sleep permanently. Only resetting CMOS ...
0
votes
3answers
193 views

What is killing my power adapters? [closed]

Hardware I have two Acer S230HL's and an ASUS PG278Q (hooked up to a custom PC build). Background 3 months ago on an exceptionally hot day, the power to the house flickered off and immediately back ...
0
votes
1answer
47 views

Laptop won't boot and charger won't work

Last night when I went to shut down my laptop, only the "install updates then shutdown" option was available and the usual "shut down" option wasn't there. I decided to just go ahead and choose it, ...
0
votes
0answers
18 views

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 ...
0
votes
0answers
30 views

Determine whether charger, laptop, or battery is broken

Laptop will not charge. What's happened up to this point: Battery stopped being detected by the computer. Charger was still working at this point; I could use the computer without the battery if it's ...
0
votes
1answer
73 views

Supply extra power to laptop's SATA drive?

I'd like to convert my laptop into a media center. I have an 8TiB HDD that I could plug into it using a SATA extension cable, but I expect that laptop won't have enough power to keep it up. Is there a ...
0
votes
0answers
35 views

Powerline DHP-P308AV - Not working?

A storm tripped our breaker five times last night and caused one of the adapters to not 'power on'. The problem is that the power is in fact working, and the device is actually getting power from the ...
2
votes
3answers
420 views

Why does my macbook give a slight tingling sensation when it is charging and what could i,we or Apple do about it? [duplicate]

I have been facing this problem since the time of purchase. I think the shocks go away once it's fully charged. I experience shocks regardless of whether I sit directly on the tiled floor at my ...
0
votes
2answers
103 views

Can you use USB-C in parallel to provide more power?

I am currently looking at eGPUs for my laptop (HP Spectre x360 15"). Because the standard power brick is rated for 150W, the USB-C standard would only provide 2/3 of the required power, so even an ...
0
votes
1answer
64 views

Can non IP data formats over cat5 / 6 (eg. RS232 etc..) damage an IP switch?

Can various data formats can be run over a cat5 / 6 cable with RJ45 ends. These can include (not an exhaustive list) HDbaseT RS232 / RS485 (using an RJ45 to serial adaptor on the end) POE Cat6 (...
0
votes
0answers
36 views

PC will not turn on

this is a weird issue I have been having with my desktop PC. I live in an area where there are a lot of power outages(at least one per day), hence I use an UPS with my PC. Recently my PC won't turn on ...
0
votes
0answers
172 views

USB mouse&keyboard not waking PC from sleep despite Power Management settings

I have a Lenovo Thinkpad T580 running Windows 10, and I use it with USB-connected keyboard and mouse. I normally shut it down only by putting on Sleep mode, and would like to be able to wake it from ...
0
votes
0answers
118 views

Dell Inspiron 15 7559, DC Jack Broke a Week after Replacement

I've had a Dell Inspiron 15 7559 for around 2 years now. These laptops have a known issue where the housing starts to break apart around the DC jack (see here for example: https://www.amazon.com/gp/...
1
vote
1answer
22 views

Can i use a Lenovo power adapter with a groundless cord? Should I?

My Lenovo PSU has a C6 power cord inlet: I tried plugging in a C7 power cord but it doesn't fit: Should I assume that it was done on purpose because using a groundless power cord would be unsafe and/...
0
votes
1answer
20 views

What is the A/L/M switch for on a Top Power TOP-300XP power supply?

I can't seem to find any information on what the switch is used for: A is setting 1 L is setting 2 M is setting 3
0
votes
1answer
482 views

Laptop randomly shuts down after latest Windows 10 update

Since the latest update of Windows 10 my computer decides to randomly shut down after every couple of minutes. First the screen goes black, then the sounds stops and after quite a while the power also ...
0
votes
0answers
21 views

iPad connected to MacBook is beeping in one second interval (power icon blinking)

If i connect my iPad to MacBook Pro it is beeping in one second interval. Beep, beep, beep, beep and also the power icon in top right corner is disappearing, appearing etc. It does like that if i try ...
2
votes
0answers
28 views

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 ...
0
votes
0answers
42 views

Power/Reset button not working after failing a CPU stress test

I overclocked my cpu and was stress testing it using a software. Then suddenly my monitor lost its signal. I thought this was another symptom of overclock failure and tried to hit Power/ Reset button. ...
2
votes
1answer
95 views

What happens to the hard drive's head on abrupt shut down?

Suppose my hard disk is up and running. Suddenly there is a power outage when the hard disk head was on top of some sector trying to read some very large portion of data(busy moving for the upcoming 2 ...
0
votes
0answers
11 views

Rebooting Home Modem (Arris) via script

I unplug and replug in my modem every day (just something I have always done); but I am tired of doing that. I am new to scripting and powershell/cmd, but am very interested. If you all could possibly ...
0
votes
0answers
22 views

External hard drive with too little power - corrupt data, damage drive, or just not work?

If an external platter-based hard drive has too little power via a USB port, will the result be: Corrupt data? Damage to hard drive? Damage to USB port / motherboard? The drive simply not working? A ...
3
votes
2answers
173 views

Will a single USB 3.0 port power two 2.5" hard drives?

Will a single USB 3.0 port have sufficient power (via a non-powered hub) to run two external 2.5" platter hard drives (the type that don't require an AC power adapter)? The hub is a Sabrent 4-Port ...
0
votes
1answer
67 views

Easily reproduced total loss of power in a handful of specific situations - ideas?

I've recently assembled a new desktop machine from mostly new parts, plus a handful of still-working parts from my old build. For the most part it's running great, HOWEVER - I have an odd power-...
0
votes
1answer
123 views

Battery ran out of charge suddenly and won't charge

I've dell inspiron 5547 laptop and it was working fine till last night i used it. I didn't shut it down as I usually do and just closed the lid to let it go to hibernate or sleep mode, battery was ...
2
votes
2answers
222 views

Is there a limit on how much more ampers can I supply for a laptop?

My laptop uses a charger outputting 6.4A with 19V (120W). This charger was a replacement for the old one, the specs were almost completely matching (19.5V and 6.15A on the old charger), everything ...
0
votes
2answers
165 views

Plugged in but discharging, why?

My Laptop says DC 19V, 2.37A, 45W The charger I am using is 19V,3.42A,65W What is the reason my laptop charging status says plugged in but discharging? I am using ASUS UX305CA model, is there ...
0
votes
1answer
42 views

Desktop Power Supply keeps on burning out

my windows desktop power supply which is 450W, has been burnt out couple of times now , doing a physical check on the unit it does not show any obvious signs like burning smell or anything, last time ...
0
votes
0answers
69 views

Laptop won't charge when turned on

I have a problem with charging my Acer Swift 5 laptop. My original charger worked just fine, but I managed to lose it. Now I bought Asus charger with the same power output as shown on the bottom of ...
1
vote
1answer
25 views

How to calculate the number of watts for every addiotnal part to my pc?

Could you help me how to calculate the number of devices I could add to my computer safely to the limit of the power supply (290 watt) I have Dell 9020 core i5 tower pc and I want to add the ...
1
vote
0answers
71 views

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 ...
0
votes
0answers
18 views

Recovering (booting up) from power outages

First of all, before I forget, I have a H97-PRO GAMER motherboard, OS is GNU/Linux. I have setup wake-on-lan on my pc so that I can power it on whenever I want, even if I'm not physically near it. It ...
0
votes
2answers
71 views

Is my PSU compatible with my motherboard and processor?

I have an ASUS TUF z370 plus motherboard, with an i7 8700k CPU, and a Chieftec-iARENA GPB-500S PSU. I have trouble connecting power to the motherboard ATX 12V slot. The motherboard has an 8 pinhole ...
1
vote
2answers
103 views

How to configure Windows to survive power outages?

I have several PCs working in environment where the power is often unpredictably switched off. There is some kind of capacitor backup that keeps the power for 1 second after the power outage. Using ...
0
votes
0answers
81 views

How can i find out what's wrong with my pc's power button?

A few days ago i suddenly couldn't power on my computer by pressing the power button, I tried powering it on by bridging the 2 power pins with a screwdriver, it worked. So i guess my problem is the ...
-1
votes
2answers
155 views

Can I charge my inspiron 15 7000 using a lower wattage charger without frying the charger?

I would like to be able to play games on my insprion 15 7000 while on road trips, but it's power hungry and the car's cigarette lighters are 120 watt, so the 130 watt charger won't work. I was ...
0
votes
0answers
44 views

Supermicro C7Q67 or PSU alarm sounds when boot attempted with AMD Firepro S9000 GPU

I have a Supermicro C7Q67 motherboard that I had working as a Windows Server 2016 RDS machine. It was a simple set up and I was only planning on using 1-2 VM clients with RDS, but I had been using it ...
0
votes
0answers
14 views

windows 7 only boots on second attempt

Lately, my windows 7 often fails to boot on the first attempt. With the first attempt, after power on, the disk light blinks briefly, then darkness forever. However, I can press the power button ...
-1
votes
2answers
206 views

Battery not charging, laptop only works when plugged

Yesterday my battery was working fine (for an old computer). It could sustain a normal usage for three hours at least. Today I have the following symptomas: I noticed that it didn't charge, even ...
1
vote
2answers
68 views

Motherboard only boots with one out of three PSUs - issue with Mobo or PSU?

The short summary: I have a new build that will only boot with one out of three (known to be good) power supplies. At this point it is starting consistently, but I'm trying to understand the ...
1
vote
0answers
101 views

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 ...
1
vote
0answers
56 views

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 ...
0
votes
1answer
73 views

USB 3.0 to SATA adapter: power SSD with single cable?

Such adapters have 2 USB interfaces for additional power. I guess, as SSD uses way less power it can be powered using only one cable? Cause I don't have two same side on my laptop :)