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Questions tagged [power-supply]

A power supply is an electronic device that supplies electric power to another device, such as a computer, monitor or printer. This is achieved by converting wall power (or mains power) to a lower voltage, and in most cases also from AC to DC. Most power supplies also provide protection from ...

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Cracked wires on Dell Optiplex L280e-01 power supplies

I have 19 Dell Optiplex XE SFF computers that were manufactured between 2009 and 2013, and I've noticed a severe defect with insulation falling off of the wiring on the power supplies with early (<...
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Fried up PSU still working but no display? [on hold]

some days ago due to some electrical problem I got my PSU fried up I opened it and there were two big capacitors open from the top and when the power cable is connected PSU fan and other components ...
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2answers
203 views

GPU has 2 PCIE and my power supply only has one PCIE

when I finished putting together my pc I saw that my GPU had 2 PCIe and that my power supply had 1 just wondering if it is a problem and my GPU is a 1070 galax and PSU is corsair cx450
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21 views

Motherboard no beeping no screen no post [closed]

I have an asus m5a97 R 2.0 with an fx cpu on it, which has a weird issue. Sometimes it boots up to Windows, but at shut down the monitor turns off but fans and motherboard and everything else is on. ...
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2answers
65 views

Why does my computer abruptly shut down? PSU is faulty but works well without load [closed]

There are similar questions on this site, some do not have definitive answers while in other cases it was the motherboard that was faulty or overheating issues. In my case it’s the PSU. The purpose ...
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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 ...
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1answer
64 views

Computer hard shutdown and won't let me restart tell cycle the PSU

My build Windows 10 home x64 MB: Crosshair VII Hero Processor: Ryzen 7 2700x Ram: CORSAIR Vengeance RGB Pro 32GB (4 x 8 GB) Vid: ASUS ROG GeForce GTX 1080 Ti DirectX 12 Strix HDD: 1x500G m.2, 3 ...
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2k views

Will a PSU rate-limit device's power consumption?

Scenario I have a Computer with a 450w rated PSU. I assume ~80 efficiency which brings me down to 360 for the computer. My video card (gtx 1060) max consumption is somewhere between 120-134 Question ...
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30 views

My computer has trouble booting sometimes

First of all, here's my build PCPartPicker part list CPU AMD - Ryzen 5 2600X 3.6GHz 6-Core Processor Motherboard Asus - Prime X470-Pro ATX AM4 Motherboard Memory G.Skill - Trident Z RGB 16GB (2 x ...
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1answer
26 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 ...
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1answer
35 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 ...
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1answer
29 views

PC's original power cable rated 13A/125V, can a 10A/125V cable be used instead?

A PC using an HX850 power supply (850W) had an original power cable rated 13A/125V but that cable is lost. (I know the original cable rating because I have other computers the exact same spec that ...
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25 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 ...
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19 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 ...
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1answer
74 views

Cooling a GPU whose fan is blocked by PCI card [closed]

First, I am using the NZXT Phantom 410 Mid tower for my system. I currently have a small NVIDIA GT710 with passive cooling (heatsink) and I am about to get a ZOTAC GTX 1080 Ti AMP Edition. I want to ...
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2answers
83 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. ...
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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 ...
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1answer
40 views

PCI-power cable to two molex female connectors

I want to put two PCIe cards with molex power connector and ideally one more PCIe card with SATA connector into my computer. Unfortunately, I can not find any power cables from my PSU to power the ...
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42 views

Random Shutdown on custom built pc

I just built a new pc about 3 weeks ago and have had some issues while playing some games. My computer is on but doesn't post and when I try to press the shutdown button on the case it doesn't let me (...
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1answer
64 views

Can a PSU outage cause a Mechanical Start Failure on a S.M.A.R.T. drive?

Recently, my PSU crunched out on me and I had to replace it. The drive in question was running at the time, and during an attempt at start up afterwards (during which the PSU did not output enough ...
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1answer
35 views

Computer turns off randomly, turns back on only after wiggling all the power cables

sometimes my computer turns off for absolutely no reason. Sometimes it just shuts off, randomly, and wont turn on Sometimes, it'll turn back on, then immediately shut off before it can boot If I ...
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2answers
95 views

POE Camera With Wireless

Is there such a thing as POE cameras that also have wireless and use the POE for power only and pickup the video feed via wireless? I'm wanting to have 4 cameras around my house and I have one ...
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0answers
30 views

Startup problems with desktop, indicator light not blinking, no error on monitor, blank screen

I'm having this erratic behaviour with my new PC. CPU/Processor: Intel i5-8400 Memory: DDR4 16 GIGS Kingston Hyper X Furry Video Card : NONE Operating System: Windows 10 64 bit Hard Drive: Samsung ...
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0answers
34 views

Prepare windows for power failure

In my scenario i have Windows system that can be notified about a power failure up to 200ms before the power failure (The UPS already failed in this scenario). As this won't be enough to shutdown ...
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38 views

How to test an EMI Filter & Power Mains Lead using a multimeter

I'm currently trying to repair an iMac A1311 (Mid 2011). None of the diagnostic LEDs come on so I believe the problem is a power issue. Tech aside, how can I test that an EMI Filter & Power Mains ...
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2answers
60 views

Schedule a power cycle / power reset on Netgear GS752TP POE switch ?

Is it possible to schedule a power cycle / power reset for a POE device powered by a Netgear GS752TP ? Ive come across this sort of functionality before in PDUs but wondered if it can be done via a ...
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1answer
71 views

New graphics card, no display

I put together a new build, and the new graphics card I purchased is not displaying anything on my monitors (meaning, my monitors are not detecting anything). Here are my build list, some facts about ...
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2answers
62 views

I have a 450 UPS, will it be enough to let me safely power down my 600watt psu computer?

I don't need to use it, just turning it off if a power outage happens is enough for me.
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1answer
42 views

ASUS Laptop screen briefly turns off when connect/remove power cord (with demo video)

I have no idea what is causing this truly bizarre problem. Whenever I connect or disconnect my power cable for my brand-new laptop, the screen briefly turns off (2-4 seconds). Its really annoying and ...
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2answers
84 views

PC is buzzing under load

I've got a mini-itx small factor PC GTX 980 i5 6600 SF PSU 600W When it's under a load, like running a game for example, it starts buzzing usually. These are two examples, not from my box but the ...
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2answers
91 views

UPS turning on and off repeatedly

I'm using an Intex Protector UPS. When I push the power button it starts with a beep, which is normal, I know. But when the beep ends, the light which shows power turns off and button remains pressed. ...
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What part of the motherboard do I need to look at to find the A-C3V output on a Tecra A11 PTSE1A-07G005 motherboard: A5A002688160 M1

I'm trying to perform a nice sharp repair on one of my numerous dead laptops which is receiving the 62h error. The error code is itself decoded from the amber blinks of the power LED as the machine ...
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25 views

Thunderbolt 3 hub not powering up on a certain port

I've recently purchased a USB Type-C hub and it worked great under Windows and Ubuntu on my HP Spectre x360 (late-2017 I believe). Until yesterday, when I noticed a warning from Windows' defense ...
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1answer
59 views

I've had FIVE hard drives die in the past few days. Is it a power surge? Could anything else cause this, and can I trust my other components?

So I had 3 mechanical HDD's (all different), and 2 SSD's (one old, one new-ish) Timeline: 2015 - 2 weeks ago - Homebuilt system works fine. 8-10 days ago - Multiple power outages during last few ...
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1answer
35 views

Custom-built desktop damaged by faulty PSU?

I have a desktop with the following specs that's been working well for about a year now: Gigabyte GA-H55M-S2H Mobo, Corsair CX550M, GTX 1060, 8 GB Corsair RAM, ... And PSU in it just died. I swapped ...
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1answer
55 views

Motherboard stopped powering up after Windows update, but after a while, started by itself

I've never seen anything like this before... I was using my PC as usual, doing so for almost 1.5 years without any issues, then I started updating Windows as usual, which completed successfully, then ...
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1answer
22 views

How to safely turn off USB-connected, ATX PSU powered 3.5" hard disk drives built as internal?

I have a bunch of internal, 3.5" HDDs which I connect them to my laptop using an adaptor which converts SATA/IDE to USB 2.0. I can choose the "Safely remove storage" option in Windows 10 and it ...
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2answers
86 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 (...
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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 ...
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0answers
52 views

PSU is not powering SATA drives

My drives (SSD that boots, HDD for extra storage) stopped turning on with my computer. It boots to BIOS just fine, but the drives are not recognized. Both drives use their own SATA power cable. ...
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2answers
75 views

Computer cannot boot to bios

When I turn on my computer, it just goes go to a black blank screen. It only has an internal graphic card. Upon further investigation, I noticed the fan intermittently stop and start again. Things I ...
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1answer
436 views

Motherboard with ATX 12V 4 pin power connector does not turn on

I have a motherboard that only was a 4 pin ATX 12V power connector to energize the CPU and nothing else. My PSU is thermaltake smart 650w and connecting the 4 pin 12V does not turn on the computer ...
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0answers
17 views

Acer laptop won't power off

I have an Acer E5 575G running Windows 10. After using the laptop for less than about 3 hours it will shutdown normally (LED turns off). If I use it for more than about 3 hours when I shutdown ...
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1answer
55 views

Dell Precision m6800 won't recognize any power supply (through own DC jack as well as docking port), and battery will not charge

My m6800 has complained occasionally about the AC adapter being seated poorly since I bought it, and I have always been able to pacify it. Since last night, I cannot. BIOS tells me that I have ...
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4answers
51 views

What Cable Do I Need To Connect My New Hard Drive To My Motherboard & Power Supply Unit?

My new drive is a Seagate 2TB BarraCuda SATA 6 Gb/s 7200 RPM 64MB Cache 3.5 Inch Desktop Hard Drive (ST2000DM006). My motherboard is an MSI B85M-G43 (MS-7823). I'm assuming my power supply unit uses ...
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0answers
14 views

PC restarting itself, even when idle

I had problem with random restarts for a long time but sometimes everything works fine while other times the pc randomly reboots every couple of minutes. Today I changed hdd for SSD and I noticed that ...
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1answer
26 views

Computer devices randomly get disconnected

I seem to have a strange issue with my PC. The devices which are connected to it are randomly getting disconnected, only to be connected again in like a second. I typically observe the issue when I ...
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1answer
33 views

Which parts of my computer do I need to replace along with a new Processor [closed]

About a year ago I build a computer with an intel i3-8100 processor. However I have decided to replace it with the intel i7-8700k processor, so I wold like to know if I need to replace any of the ...
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0answers
21 views

What is the use of female to female SATA cable with power?

The other day I accidentally bought a female to female SATA cable with power cable next to it. Since the power and SATA itself is right next to each other and there is no way to separate them unless ...
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1answer
48 views

Power requirements of a self-powered USB hub for use with four or more HDDs

How can I be sure a self-powered usb hub will be able to power several HDD? What do I have to be aware of? I'm looking at powering 4+ external HDDs from different vendors and capacities (500GB, 1TB, ...