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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 overload, power surges and other potentially problematic or hazardous conditions.

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Dual Socket Node Doesn't boot [on hold]

I have a Xeon E5-2650 v3 dual node with an AsRock motherboard and EVGA 850 G3 power supply. For some reason, I have not been able to boot it. I used the power supply in a different machine and it has ...
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CPX200DP PowerSupply with Python

I want to send commands to the PSU by the company Aitti with Python. The manual states that there are commands one can send via the USB to the PSU. For example: OP set output on/off where has the ...
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Raspberry Pi DIY UPS needs clarification [on hold]

I found the following article regarding with DIY RPi UPS: https://tutorials-raspberrypi.com/raspberry-pi-build-your-own-ups-uninterruptible-power-supply/ It's still not clear for me, because this ...
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No Battery Detected but it works if i disconnect AC

I'm having the exact problem described in this question: "No Battery is Detected" but battery works A few months ago my laptop (ASUS ROG G750JH, bought roughly 6 years ago, now running on ...
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Weird phenomenon : computer only boot if I plug-in a specific USB device while pressing the power button, once in 10~20 tries

I've got my hands on a very, very weird issue. I spent months trying everything, and google had literally 0 similar problem to help me. To summarize, it's a computer I built myself 5 years ago. Since ...
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1answer
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Hard drives have different amperages

I got a IDE to USB adapter so I could see what's on these old hard drives. The adapter takes the form of a USB adapter for the data, and a wall-to-powerbrick-to-molex adapter for the power. The ...
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38 views

Using same cables for PSU

Im looking to upgrade my current RM650x power supply to a RM850x. Is it possible to use the same cables from the old psu with the new psu even thou it just a change of watts or would I need to gut the ...
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Estimation on power consumption for dram modules on desktop mainboard?

Desktop mainboard is equipped with Crucial, DDR4-2400, PC4-19200 2x16GB, CT2K16G4SFD824A, CL=17, dual Ranked, x8 based, unbuffered, non-ECC, 1.2V, 2048Meg x64bit modules. What is power consumption for ...
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Monitoring my computer's energy's usage - is it too low?

My desktop computer is an i3-2100 with 1 DVD drive, 2 HDDs and 2 SSDs connected to it, as well as a CPU fan and a case fan. All of this is connected to my PC via extension cord (i.e. power bank), ...
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77 views

Power Supply needs for my first high end gaming Desktop? [closed]

This is my first time ever asking for help with anything related to computer issues but I feel like this is just too big of a risk for me to just go off of other people's questions. Anyway, this is my ...
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Black screen when powering on PC. Fixed by removing power plug, plugging back

I have a weird problem with my desktop PC. Sometimes (not all the time), after I power up the PC, the display shows a black screen. Nothing shows up. The PC was powered on successfully as I can see ...
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963 views

My ATX power supply wont fit my microATX power connectors

My ATX power supply wont fit my microATX power connectors. I know they are compatible but the square-rounded square shapes aren't fitting properly. How can I make them fit?
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What could be the name of this rare type of HP Pavilion power connectors?

It is a HP Pavilion G6 laptop, and I am trying to identify its uncommon power plug. Looking around on the net, I see only the more standard, center pin power plugs, but not this. I think, maybe most ...
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Laptop GPU Performance Low When On AC Power

HP ZBook G3 Mobile Workstation Core i7 Nvidia Quadro M2000M 150W AC adapter Windows 10 When this laptop is plugged in on AC power the 3D performance is dramatically worse than when running on ...
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1answer
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My PC does not respond to power on switch immediately though USB ports seem to receive power [closed]

I have gotten a PC assembled for my home use. Since a few months, I am experiencing a strange issue while powering the PC on. When I switch on the wall button of the machine (in which the power ...
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Getting electricuted when touching the laptop

My friend bought HP Pavilion 15-cc183cl, the seller immediately removed the ground pin, because the circuits in my country don't have ground, (the circuits aren't designed to have a ground pin), and ...
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3answers
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Weird buzzing noise coming from the pc (PSU perhaps)

Ok so this is a weird one. I'm used to troubleshooting things like this one myself, but now i'm rather stuck. Just bought a new PC with RTX 2080 & Ryzen 7 2700X. All good, runs smooth and rather ...
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unexpected shutdowns under GPU load, but GPU doesn't *appear* to be overheating

Hi there! I really hope someone can help trouble shoot this! I'm getting unexpected shutdowns when GPu is under load. It has happened before (just last month), and it seemed to be fixed previously by ...
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70% GPU usages and 100% CPU usages on RTX2080ti and 6700K

Recently I update from the GTX1070 to the RTX2080ti, but there is only about 70% GPU usages when I play the Rainbowsix Siege and Assassin's Creed Odyssey. It will be 100% when I use the GTX1070 so I ...
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1answer
43 views

Is my PSU ATX 4-pin connector reversed from the standard?

I just got an EVGA 750 GQ power supply. The manual mentions that it includes a ATX 20+4 pin motherboard cable. However, the 4-pin connector appears to reverse the pinouts from the 4-pin plug on the ...
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Lenovo laptop suddenly shutdown an never turning back on

I think i have a big problem. My Lenovo G50-80 suddenly shutdown. It was connected with the charger and the battery was in good condition. The laptop doesn't have the warranty. I tried removing the ...
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75 views

Do SSD's die when plugged in PSU with different SATA Cable?

Me and my roommate both plugged an SSD into an Corsair 650W PSU using a SATA Cable that was shipped with EVGA's 500W Bronze PSU. It did not boot once, everytime we try to start the PC the PSU (doesnt ...
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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 ...
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PC restarting without warning

I have had an issue with my PC restarting during resource intensive gaming and I cannot figure out what the cause is. The main culprit in question is Star Citizen though it seems that other games will ...
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2answers
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Can a water damaged motherboard or power supply ruin a functional CPU?

I found half of a desktop on the side of the road the other day. It included a 430 watt power supply, DVD r/writer, ASRock B250M-HDV motherboard, Pentium g4560 CPU, as well as a case with both side ...
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Connecting switches between two buildings, each building has it own mains electrical supply

I have two buildings (A + B) each with their own mains electrical supply. The buildings are about 20m from one another. Between the two buildings are the Cat6 cables (one active and two spares). The ...
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Aorus Gaming 5 Mobo Flashes Green Once and Doesn't Turn on

I'm in the process of upgrading my gaming PC for the first time in 6 years and this MB is giving me a bunch of issues. So far, I've had to buy another CPU after the 7th gen one I bought was ...
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PSU voltage and microfreezes

A week ago, my PC started exhibiting a problem. When scrolling in a web browser or trying to game, microfreezes happen randomly. The PSU is five years old, and some of the voltages look out-of-spec, ...
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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 ...
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Should the UPS output be exactly same in normal and battery backup modes? Or it is normal to have a slight variation in voltage or something?

My 10 months old PC ran into a problem some days before. My system specs are as follows: Intel Core i7-8700 Processor MSI Z370-A PRO Motherboard 8GB RAM Here are the details about the issue. Most ...
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Can dusty RAM slot fail to POST?

Today after a heavy dusting in my house, I booted the pc (which was covered in a thin layer of dust already), it failed to post. It only worked when I cleaned the RAM slot. This once happened in my ...
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Laptop power adapter output compatibility

I've lost my original power adapter, and I can't find the proper one in any of the stores currently available. I've HP Compaq 6730b, and as per cutratebatteries.com it outputs 18.5V 3.5A. However, I'...
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Powering an eGPU (Razer Core X) through a 500W ATX DC-DC Power Supply [closed]

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 ...
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109 views

How to connect Sapphire RX580 Nitro+ GPU to Corsair CX750M PSU?

The Sapphire RX580 GPU is a special edition and has an extra 6pin port. I'm just a little confused how to connect it properly. The CX750M PSU cam with two 6+2 wires but what confuses me is the wires ...
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1answer
275 views

Do I need both the 8 pin and 4 pin cpu power plug for my MSI B450 Pro Carbon?

I have bought a new mainboard, an MSI B450 Gaming Pro Carbon, and to my surprise, it features 12 pins for the cpu power connection. My power supply, a Pure Power 10 BN274 600 Watt, only features 2 x ...
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I need help finding why my computer was fried [closed]

So, my power supply burned out, and it happened for the second time in a row. The first time it was because I was using old drivers, but later on me and the original owner changed the hard drive to ...
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T460 won't charge when powered on [closed]

I seem to be experiencing the same problem or a very similar problem to the person in this post. Bought a second hand T460 that also doesn't charge when powered on. However, the Windows 10 Lenovo ...
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1answer
67 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) ...
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Will a rack mount 1U power supply fit in an ATX standard case?

I am currently attempting to make a custom build gaming desktop, but I also have a scrap power supply (still working) from an old HP rack mount server (I think a 1U form factor). The power supply is ...
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32 views

Is there a lower bound on power consumption of CPU

I currently run a old laptop from 2015 with i7-4720HQ as a linux server at home. The TDP of that chip is 47W. Now, I know that TDP means the chip can't go beyond 47W of power consumption, is there a ...
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2answers
54 views

Are Razer devices secretly ruining my PSU?

Question: can USB devices (keyboard, mouse) that don't seem to shutdown (lights are on) along with the system kill PSU? Too short; I want read more: Once upon a time I had Thermaltake Toughpower ...
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54 views

Random hardware issues and hard crashes

So. I have had a battle going on with my aging desktop and stability. Here is the original specs: CPU: Intel i5 2500k , No overclock. RAM: Corsair Vengance 1600MHz 16GB (4x4GB) Running at 1333 MHz....
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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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226 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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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
43 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
101 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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3answers
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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1answer
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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
49 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 ...