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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Desktop shuts down (actually not..?) randomly

I got brand-new PC 2-3 months ago, assembled myself. I think I already have enough knowledge about softwares / hardwares, but I think it is out of my hands. After assembled my PC, it eventually / ...
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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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HP-au123cl laptop is buzzing when charger is plugged in

I have a 4 y.o. HP-au123cl laptop running Windows 10 that started making a buzzing noise a couple of days ago when power adapter gets plugged in. If I unplug the adaptor and plug back in, noise stops. ...
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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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Plugging both ATX 12V (4+4pin) and EPS 12V (8pin) to x570 master

I would like to plug the Thermaltake 1500 on the x570 Master From PSU Manual: Semi-modular PSU with both cables Motherboard below Link to Manual Can I plug both EPS12V and ATX12V into the ...
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Desktop restarts loop In vertical

Desktop fails to start, bios screen then restarts loop, or keeps power turning off and on. When kept horizontal pc seems to start, and keep running. What's the explanation for this ? Loose cpu ...
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Random BSODs and unexpected behavior (PSU or Motherboard)

I am having random problems with my PC, starting with several random BSODs and a memory dump stating error SYSTEM_THREAD_EXCEPTION_NOT_HANDLED, but I cannot check where the exception occurred since ...
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8 pin and 4 pin CPU Power connectors on MSI MPG2390, blew out my PSU (CX750)

I have a continuation question on this thread: Do I need both the 8 pin and 4 pin cpu power plug for my MSI B450 Pro Carbon? I had issues with 9900K on an MSI MPG Z390 motherboard and an NVIDIA ...
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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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PC display is blinking - Turning off and on again in intervals

Let me start by saying this is something that has been happening since I first built my PC a couple of years ago and it's been a real mystery to me since then... Let me explain why. The issue My PC ...
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Can I run my desktop without a PSU fan?

What if I pulled the PSU fan out of the PSU, but all the other fans and heatsinks are still in the PC and running?
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DL360 G9 fans run when powered down?

So I just setup a DL360 Gen 9... when the main server is switched off (but its still plugged in, so can access iLO etc.) The fans still run... Now this doesn't appear to just be the PSU fan as I would ...
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PC suddenly powered off and won't power back on

I have MSI B150m Mortar motherboard with Corsair 550w PSU, i5 6500 CPU, a 8GB kingston ram and a GTX 1060 GPU. Recently I had a external drive giving me problems, it was not being detected, so I ...
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Why can’t a 650w rated UPS can not power my 350w computer on main power failure

I have a computer that could potentially draw 350w on high load. Due to main failures often, I grabbed 1,000va (650w rated) UPS from Emerson. After fully charging the UPS battery, I have done self ...
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Is My Power-Supply Faulty? or Could It be something Else

So I Suspect my Power Supply to be faulty but I am unsure and want some advice, I turned off my PC(full shutdown via windows) and then in the morning it would not start again, I press the Power Button ...
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Can I short power button always on?

I have an aging home server, Asus AT3IONT-I Deluxe, and I want it to power on automatically after a power loss. I have enabled the BIOS setting to do this but it doesn’t work. The power LED turns on ...
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Newly Build Computer Not Running POST

I build a computer using entirely new parts (except for the video card with I used in my old computer for about a month before deciding to upgrade everything). When I turn it on the fans run and some ...
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pc automatically turns on when plugged in

Hello everyone I have some questions maybe you can help me with some advise on what I should do,, yesterday I have encountered a problem on my pc, My pc won't turn on immediately after shutdown so I ...
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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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What could be the reason behind a PC not turning on after changing the hard drive?

Just recently I was trying to install Windows 10 on my new SSD drive, while having HDD unconnected. Then I booted autoinstaller from USB and found out that my SSD was missing from the list(possibly ...
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PC wont start after changing the case only

Changed my case recently Before the change it was working just fine. CPU and CPU cooler were not removed and now I am facing the issue where the computer won’t start and when I press the power-on ...
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Reboot Loop Can’t Get To OS

My computer when starting up loops and never gets a chance to get to the windows 10 load up. I tried 3 different ssd and hdd so I know it's not that plus a boot media to see if I can do a reset. No ...
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Seasonic EPS cable in EVGA PCI-E psu plug

I have an Nvidia Tesla card to install with an EPS connector. I have an EPS cable from my Seasonic Focus PSU that I plugged in my EVGA supernova 850w PSU and I checked with a multimeter and I get +12v ...
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Motherboard issue

I installed a new cpu yesterday and swapped out the case of my pc right, i set up the new pc case and everything good but then i power on the pc and the fans turn on for like one second and then ...
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PC on and off loop , the longest it can stay is 30 minutes then automatically turn off and on again

Went to three repair shops - 2 said its motherboard & 1 said power supply when I request to repair the motherboard, but they don't have tools to confirm it if its really PSU issue. Asking one more ...
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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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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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129 views

Dell T3600 Front Panel Issue

I am having the weirdest issue with a Dell T3600 I cannot figure out, and any help is appreciated. I know this is going to be long, and I appreciate the time anyone takes to read this and help me. I ...
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Multiple power-adapters on Dell XPS 9500

I have the 2020 Dell XPS 9500 with the WD19TB Thunderbolt dock. The laptop can be powered by the dock alone or it can be powered by its own power supply. I have been running it fine with just the ...
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wiring of large number of fans

I want to bring power to 8 power-hungry PWM (4pin) PC fans. The manual for the motherboard specifies max power delivery of fan connection of 1A. There is just one "chassis" connection, the ...
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Laptop doesn't start after being shutdown for a couple of hours except when connected to power

I'm using an HP Compaq 6530b laptop and for a year or more now, my laptop doesn't start after it has been shut down, hibernated, or even after removing the battery for a few hours, and only happens ...
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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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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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Is it possible to set Intel Graphics maximum power state via Windows power options

My cpu was overheating so I decided to decrease it's frequency. I have done that with "Power options" -> "Change plan settings" -> "Change advanced power settings" -...
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Computer crashing frequently due to GPU or PSU?

I've had my PC for roughly a year though, and since almost a month it kept crashing frequently when starting games. It started with BSoDs, I checked dump files, and concluded that my RAM is faulty. ...
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Custom PC No Power

Alright smart people of the internet. I come to you in desperation. I've been at it for hours and I'm entirely lost. I was one of the lucky few that was able to get their hands on a Asus TUF 3060 OC. ...
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Can I use an external AC/DC power supply to power 4 SATA HDD?

I would like to power 4 SATA HDD enclosed in this bay with an external AC/DC power supply like this. I am looking at the IronWolf 3TB ST3000VN007 (data sheet, and user manual) whose power specs are: ...
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No response from power supply when plugged in to mobo, though power supply appears to be ok

When plugged in and switched on, not even the power supply fan is spinning. I removed the PS, jumpered the green and black pins, and the fan does turn on with power. This happened after a power down (...
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Which one is faulty - PSU, GPU, DVI-D to VGA adapter or the Motherboard?

I bought a Radeon RX 460 and I get an inescapable screen freeze when switching to another program with Alt + Tab. This issue does not occur when I underclock the GPU with MSI afterburner to 50% of its ...
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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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Can this hardware failure be a faulty motherboard?

I have a self built PC which is running for around seven years now without a problem. Yesterday, in the middle of streaming Netflix on Ubuntu, the screen froze. Only a hard reset worked. After the ...
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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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Motherboard won't reboot unless left unpowered for a couple of hours after shutdown

I have a machine with an ASUS X99 Deluxe II Motherboard. Everything works fine but I notice that if I power it down, it won't reboot (e.g., via the power button on the motherboard itself) unless I ...
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External 3.5'' hdd connected to desktop. Can the external hdd get damaged if the desktop power is suddenly off?

To explain better the question: If the power supply of a external hdd remains on, while the desktop is suddenly shutdown (not safely, but by lack of power) can the external hdd be damaged/bad sectors/...
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How to power up and boot custom industrial PC

Someone gave me an industrial PC that was going to be thrown out at work. Unfortunately, they couldn't provide any additional information about the model and specs. I have googled all of the part ...
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Can My Macbook Pro Be Damaged From Power Surge

so I have a MacBook pro 16inch i9 5500M 8GB and its pretty good for gaming, I usually get 200 fps in csgo on high settings and like 80-90 constant on GTA V. But since I live in Texas and we got hit ...
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power rating difference of UPS - safe to use?

My UPS has the following power rating for the outlets where I'm supposed to be connecting my devices for uninterrupted supply: 230VAC/50HZ There are 2 outlets in total. but, my monitor has the ...
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Buzzing sound from PSU on some startups but not always

I've just bought a second hand Dell tower PC. Upon switching it on, it sometimes immediately makes this buzzing/drilling sound. Switching it off and then on again resolves the issue (which I find ...
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61 views

Tower Migration: cpu_fan error

I am moving my hardware to a new tower. Machine is not booting up because of the cpu fan error. I can see all the fans are physically on on the machine. I can see on the motherboard that the fans are ...
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2x 4 Pin CPU cable in EATX12V

I have the be quiet! power 9 psu and the asus prime b450-plus motherboard I'm using a external graphics card and a NVME SDD so I guess it'll use 2 PCIe ports. The manual says I have to plug in a 8 pin ...

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