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Questions tagged [power]

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

-1
votes
1answer
91 views

Diy laptop battery extension [on hold]

So I was wondering how I could increase the mAH of my laptop's battery, which is quite lacking at 36Wh. One idea I had was to fill up the 2.5 hdd bay with lithium flat batteries and solder them in ...
0
votes
0answers
17 views

Windows 10 USB device disconnecting after a power failure

My USB mouse is always getting disconnected after a power failure. I tried unplugging the device and plugging it again, the laser lights for sometime and then it stops. For all USB root hubs i had ...
2
votes
2answers
257 views

Recommended Ground while testing Laptop with Multimeter? [on hold]

I'm about to test my laptop motherboard to make sure a component is receiving power. All guides point out I need to connect my multimeter to a proper electrical ground. How do I locate such a ...
0
votes
0answers
21 views

Monitors occasionally dont turn on, popping out CMOS battery for a few minutes fixes [closed]

Occasionally when i go to boot up my computer, my monitors do not turn on, the USB devices do not boot up, and the computer does not boot to windows. This will persist until I unplug everything, pop ...
0
votes
0answers
17 views

synchronization between diffrent type of ups [closed]

i have two Uninterruptible power system 100 kva liebert nxa and we need to add new one but we dont find the same model.finally we decide to add libert nxc series . my question is .how these new one ...
1
vote
0answers
25 views

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 ...
0
votes
1answer
95 views

Task Manager shows high power usage while gaming

I turned on my computer today and all of a sudden my power usage was spiking for everything. Not just in games but when i open task manager and watch videos... I have never seen this happen on my ...
0
votes
2answers
76 views

Power button working scarcely

My PC has problem starting. By starting, I mean turning power on. Case: "CM Storm Trooper". MB: Asus Maximums VIII Extreme Bought in 2015. I started months ago, I needed to press the power button ...
0
votes
1answer
38 views

I want to turn off “Turn off wifi to save power” and “Turn off bluetooth to save power” features in Ubuntu

Okay, so I'm using Ubuntu's latest LTS version as of 5/Dec/2018, and I have this in the gnome settings app: Settings>Power How do I get these features off, as turning off these buttons just turns ...
1
vote
0answers
41 views

Powering an eGPU (Razer Core X) through a 500W ATX DC-DC Power Supply

I have an 500W ATX DC-DC Power Supply connected to a 12V battery and I am using it with a Razer Core X eGPU with an RTX 2080 installed in order to make my setup mobile for a project. The motherboard ...
0
votes
2answers
90 views

How to calculate the power consumption of 40 PCs of same exact model and build for UPS spec purposes

We have a school computer lab with 40 identical PCs with the following specs: Lenovo H530 Intel® Pentium™ G3220 (3.00 GHz Dual-Core) processor 2 GB RAM 500 GB HDD (7200 rpm) 15.6 inch TFT Standard ...
0
votes
1answer
60 views

How to switch on secondary PSU out of main chassis

I have a machine with: Mobo: ASUS P5QL PRO RAM: DDR2- 8GB GRAPHICS: Gigabyte R7 360 series HDD: 6 discrete units plugged in 6 SATA ports. (some are 1TB, some are 500GB, some are 320/250GB) ...
0
votes
2answers
50 views

I recently bought a replacement charger for my laptop, but I'm worried about the polarity

so a couple of weeks ago my original laptop charger blew. So I ordered a new one with the same voltage and amperage. On arrival I noticed that the polarity might be in reverse. The old charger had (+)-...
0
votes
0answers
27 views

Linux NFS unsupported protocol error after power failure

Everything was smooth until a power failure. One of my servers and a client are both running Xubuntu 18.04. This server has internal 4T data disk and an 8T external USB backup drive mounted at /A and ...
-1
votes
0answers
10 views

How can i set one animated timer on the power point for all the slides? [closed]

I want to make one animated timer that counts down during the presentation
0
votes
2answers
65 views

My laptop charger blew a fuse in it, should I just short it?

Soo, I recently had a voltage surge at my house, and a couple of my chargers blew up. My laptop's charger was one of them. Upon opening I found out that only a fuse labelled T3.15A/ 250V had burned. ...
0
votes
2answers
567 views

Is it possible that AC mains (UK ~230V 50hz) could cause micro stutters under load in modern PC's on potentially noisy home sockets? [closed]

I am experiencing machine stutters on my PC, after changing every single component 3+ times (every component, yes) and reinstalled operating system over multiple different disks. Yet, they still ...
1
vote
1answer
19 views

How can I reduce power draw while suspended?

My new XPS 13 has pretty poor battery life while suspended. I've had to switch to hibernating. Is there any way to tweak bios or something to reduce suspended power draw? It has Fedora installed, ...
2
votes
1answer
32 views

Fully Modular Power Supply Replacement

When it comes to replacing a fully modular power supply, does anyone know if its a good idea to unplug the cables that go into the supply and plug them back into the new one? Instead of having to ...
0
votes
2answers
59 views

How can I check why my Windows 10 based computer is switching off during the night?

My Windows 10 computer keeps on randomly shutting down during the night. This is especially annoying since I am running some important computations on it during the night hours for my project and I ...
0
votes
1answer
30 views

Monitor doesn't work for a while after removing power cord

If the light goes down or the cable cord is removed it can't power on again. I always have to unplug it for a whole night or day and plug it again, and then it works. What I tried: - Different power ...
0
votes
1answer
42 views

Laptop Battery and Charger potentially broken?

This is about my roughly 4 years old Asus N551JK, in case it matters. Whenever the laptop is under heavy load (android studio running, for instance) the battery is acting really weird. It constantly ...
0
votes
0answers
29 views

Asus T100t Transformers that will not boot up

I own a couple Asus T100t Transformers that will no longer start. Ive replaced batteries, tried other tricks found on various forums, Such as holding the power & home buttons down together. Also ...
4
votes
1answer
110 views

How can data be lost on an SSD drive? [closed]

I've seen several reviews stating that an SSD drive is ten times as fast as an HDD and is much more reliable in terms of data loss because hard drives have heads that can scratch the disks while SDDs ...
0
votes
0answers
22 views

Mid 2013 MacBook Pro won't turn on and charger blinks green/orange light

My mid 2013 MacBook Pro (with removable battery) has stopped turning on and when I plug the charger in the green light is very dim/flickering. When I attempt to power on the laptop the charge ...
3
votes
1answer
51 views

Can phones/tablets avoid charging from USB power?

I know that some laptops (e.g. Lenovo ThinkPad) have user-controllable software to disable battery charging even when AC power is plugged in. This feature takes precedence. When a typical mobile ...
2
votes
2answers
90 views

Shutdown-on-LAN capability

There is a technology, called WOL. Is the an opposite? Is it possible to shutdown a computer via LAN? I would expect small embedded linux in a NIC which was capable to long-press power off button. ...
-1
votes
1answer
48 views

Who is powering Wake-On-LAN capable card?

Who is powering Wake-On-LAN capable card? Is this PSU? If it is then, where are these wires on PSU, where I can take powed in power off mode? The focus is on details of power source. There is no ...
2
votes
1answer
106 views

CPU Does not run at full speed

I've been experiencing a problem with my processor's speed lately. The CPU is running 797MHz, instead of it's full performance. In the past, it's been running well, until yesterday when it suddenly ...
0
votes
0answers
40 views

Is it okay if the Power LED to flash once while switching on UPS?

My CPUs front panel power LED is flashing once after I powered on the UPS. A 'TUCK' sound is also coming from my speakers. Is that normal or is there any issue with my motherboard?
0
votes
0answers
64 views

Roughly every week, computer blackscreens and won't turn off

I've encountered probably the most annoying issue possible for someone trying to diagnose it. Roughly every week, my computer suddenly blackscreens (no signal to monitors) while staying powered and ...
1
vote
1answer
34 views

Is there a name for this kind of power cable?

I really like these PC power cables with the flat, side-by-side wire instead of the fat round ones you usually see. I can't seem to find them on Mouser, etc when searching for "flat". Do they have a ...
0
votes
2answers
95 views

Voltage Stabilizer and USB Hub

I need to use a voltage stabilizer to secure my USB Hub (Anker PowerPort 6), but the stabilizer is slightly underpowered. It is rated at 1.3A, 300W (230V). My Anker has input requirements of 1.4A (...
2
votes
1answer
69 views

External SSD not working with USB C to A cable

I have a cheap Sabrent SATA III to USB 3.0 SSD enclosure (EC-UASP, 2.5-Inch SATA to USB 3.0 Tool-free External Hard Drive Enclosure) that I often use with an equally cheap SSD for some extra storage. ...
-2
votes
1answer
23 views

GTX 1050 and GTX 1050 Ti-based cards power socket?

Some graphics card have a power socket in addition to drawing power from the PCIe bus. Is this the case for nVIDIA GTX 1050 and GTX 1050 Ti-based cards? That is, do No vendors' 1050 and 1050 Ti cards ...
0
votes
1answer
40 views

I gave 12V to my USB port on my laptop G50 70 i3 4th gen and now it's not working [closed]

I built a DIY cooler station for my laptop laptop which features both USB powered as well as 12V - 20V DC powered jack. I knew from the start that I that it would be possible to accidentally power ...
0
votes
0answers
14 views

What can cause a PC to power back on after being suspended?

I have a W10 (latest version) desktop PC. The first time I suspend it after booting, it stays off. If I then wake the PC, work some more, and suspend it again, the PC does go into sleep mode but then ...
0
votes
2answers
55 views

Computer doesn't seem to boot

A while back I bought a new computer. The old one was catching dust in the attic, but about a week ago, I saw it and decided to use it as a NAS, Network-Attached Storage. I cleared it of dust, ...
0
votes
5answers
2k views

How to fix the “Unknown USB device needs more power than the Port can Supply” error?

There's a message popping up saying: Unknown USB device needs more power than the Port can Supply. What do I have to do? What's wrong?
0
votes
1answer
38 views

Power state continually swaps between charging and discharging

When connected to AC power, my Lenovo T440s (2014) intermittently switches from "charging" to "discharging", and very quickly back to "charging". A full cycle takes just a few seconds (anywhere from ...
0
votes
0answers
26 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 ...
1
vote
0answers
50 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
62 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
490 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
15 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
138 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
66 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
45 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
195 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
48 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, ...