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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Parallel battery charging UPS

Just bought new ips for 25 dollars and have bought 3 batteries 12v 9ah each. What i did is the following Opened the UPS and connected positive end of the battry to a wire that is connected to a ...
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Mini PC stick can be powered with wall outlet (5V/2A) but not with power bank (also 5V/2A)?

I bought this product with the hopes of powering it with a power bank: https://www.intel.ca/content/www/ca/en/products/boards-kits/compute-stick/stk1a32sc.html https://www.amazon.ca/gp/product/...
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Low voltage readings in BIOS and other weird readings

I have an older ASUS H97 Plus mainboard (using an Intel Xeon processor), never updated the bios. Two or three years ago I started getting Surge Protection warnings so I replaced the PSU. Today I ...
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How to choose a mother board which is compatible with all the old components [closed]

My system configs I have been facing some weird issues that I can't find solution to 1 : At times while I am working on my system, the screen completely freezes, no response, it does not restarts on ...
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Finding the correct adapter for a device

I need some help ensuring that I purchase the correct adapters for two devices I own as I have no idea. I have two devices I bought in the UK that have the standard UK G style plug. Both use the USB ...
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Computer won't start up (PSU tested out ok)

I've got a ten year old computer that was working until recently. Now it won't start. When you turn it on, nothing at all happens - no fans turn on (including on PSU), no lights on the mobo light up....
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Hp 14 Dq 1039 dead no response [closed]

My laptop died on me few weeks back (wouldnt charge or turn on , other charger didnt work) as soon as I had connected it to my power cable. The local shop i got it from told me the warranty doesnt ...
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I'm buying a power cord for an External Hard Drive docking station - will I fry the drives if I buy the wrong one? [closed]

My docking station is a USB 3.0 SATA HDD Docking Station with Offline Clone Function, made by Inateck. I lost its power cord, which, in the manual, is listed as "DC Adapter". On amazon, it says the ...
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How to use all the 45 Watt out of the Xiaomi Mi Power Bank Pro 3

I have been working on this project that consists on making a somewhat portable computer... I intend on using a Raspberry Pi and an old laptop monitor to get the job done. The thing is that I bought a ...
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Computer reboots/freezes when using a lot of (graphics) resources

Whenever I would render (Cycles) using my GPUs (2x GTX 970) eventually my computer would freeze (if music was playing it would give a loud distortion pop when it happened). Then I updated my BIOS to ...
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Double boot after AC power reset?

My computer has been doing this for so long I basically accepted it as normal: any time AC power is lost, intentionally or not, the PC takes 2 tries to boot. Never 3, always 2. So if I toggle the ...
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(Bumblebee) Any GPU related commands totally freeze system when gpu is powered off via bbswitch

I own an Asus Rog Strix Scar III - model G531GV which runs a side by side installation of Parrot OS together with the already installed Windows 10 OS. After a lot of struggle and numerous hard resets,...
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Computer sometimes cuts power during restart [closed]

What would you do to troubleshoot this? Booting my system requires unlocking the drive (OPAL SED w/PBA), then restarting. If the computer (more specifically the drive) loses power during the restart, ...
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Identify faulty PC part when no logs/dumps are produced

My best friend's PC completely freezes under any GPU extensive load. No blue screens shown, no logs/dumps are produced. Only reset helps. Running on the integrated GPU, the freezes don't happen. I ...
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Bizarre shutdown on a very specific task

I stumbled upon a program (OPENFACE offline facial landmark detector) that shuts down (hard power off) my computer within 20 seconds. Obviously this is not that programs' fault- I experienced same ...
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Computer randomly turning off?

My computer randomly turns off with no warning, not even shutting down. I run a minecraft server on it, and it has been corrupted several times. It shut off for the 3rd time in a row today, about 10 ...
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single 4 pin cpu power cord in a 4+4 pin psu connector input

I have a corsair hx 1200 power supply ... my crosshair vIII hero motherboard has 2 cpu inputs on it... one 8 pin and one 4 pin... i ordered custom cables from cablemod as well... one 8 pin and one 4 ...
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USB hub often disconnects entirely when transferring data

I have a standard non-powered 4-port USB hub connected to a Surface Pro 4. I have 3 devices plugged into the hub: Transmitter for keyboard/mouse Powered 3tb HDD Powered 10tb HDD Every so often, on ...
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Asus Prime B350 Plus USB Over Current Issue

Asus B350 plus mother board AMD Ryzen CPU Corsair 850w PSU 4 X Corsair 8gb Ram 32GB Total Asus Strix 1070Ti GPU I inherited this pc but after a week of perfect use I got the dreaded usb overcurrent ...
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What is this 10-pin ATX power connector (image) and can I power harddisks off it?

I have a 250W PSU out of a Dell R230 (unfortunately I could not find a spec sheet - but it's a stock psu of a Dell R230). It has this 10-pin (only 9 pins are populated with contacts!) connector that ...
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windows 10 computer restarts automatically at random moments

english isnt my native language, so if anything becomes confusing just ask. when they shut down windows 7 support i had to upgrade to windows 10. After a while my computer started to restart at ...
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Laptop sudden dead (no response)

Few days back I connected my charger to my laptop which was on and within a few seconds the laptop switched off without any warnings. It wont show charging led light and wont power up at all(tried ...
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iMac G4 won’t turn on

I’m attempting to repair and old 2003 17” iMac G4 that won’t power on. It’s completely dead, no startup sound, fans don’t spin, nothing. I’ve tried the following so far: Attempted PMU reset using the ...
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Upgraded PSU x1.25 and still getting power off at maximum load

Some tasks that involve serious number crunching CPU+GPU or gaming in VR cause my computer to just shutdown abruptly. So i had to live with CPU load bound to 80%. That solved the problem but of course ...
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PC restarting while playing some games (not overheating)

So far, this has only happened in Grim Dawn and Minecraft. It's very inconsistent, sometimes i can play for hours with no problems and other times it'll restart in 5 minutes. The screen just suddenly ...
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Tingling/shock when holding USB plug of externally-powered device (speakers, etc) and touching HDMI/DP plug

PC: GPU: Gigabyte RTX 2070 Windforce CPU: i7 7700 RAM: Kingston HyperX Fury 16GB DDR4 Mobo: GIGABYTE GA-B250-FINTECH PSU: EVGA 750 G2 Case: Coolermaster HAF 912 Combat I'm troubleshooting an ...
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Can I use a power supply with different input/output voltage for router?

I bought a Verizon g3100 router; it did not come with its external power supply. The needed cord has an input of 105-125v ~ 60Hz 1.5a and output 12v 3.5a. I can't find exact cord anywhere but I ...
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Computer won't shut down properly with USB device plugged in

I'm running Windows 10 and recently bought an Audioquest DragonFly Red USB DAC - ever since, the device is of course plugged in constantly so that I don't need to reconnect it each time I start the ...
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Did I destroy my monitor by turning on/off a multiple plug/power strip

I tried to make an old windows 7 PC boot into repair mode. The monitor and the PC were both connected to the same power strip. I turned it on/off multiple times (hard reset) and now the monitor is ...
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Computer turns off sponaneously. Is it the PSU?

My computer turned off multiple times spontaneously. It happens instantly and it also instantly starts rebooting. I didn't do anything with high ressource usage (just a browser open and powerpoint) ...
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New PC build , boot issue

i'm new on superuser so correct me if i'm breaking some rules here, I have built a new pc system. when trying to boot both cpu and psu fan spin for a couple secods then go off, and i can re-do this ...
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External battery (powerbank) discharged immediatelly upon DC-IN unplug [closed]

I just bought a battery Viking Smartech II, and I have this problem. It started slowly to charge, from 1% up to 20% after an hour. I wanted to test it so I unplugged the power cable from DC-IN - and ...
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Is it safe to leave a HDD powered up while pc is off?

I am currently running 2 PCs from one power supply. As it is, both PCs come on with the power button, but I'd like to be able to unplug the secondary PC when I'm not using it because the fan noise is ...
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Laptop battery still charging but won’t turn on after sitting in a case that had water dripping on it over the weekend

I left my computer at home for the weekend and when I got back a water pipe in the ceiling had broke and was dripping over my laptop which was inside of a cover. The cover was completely wet but the ...
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Is it safe to unplug one end of the HDMI cable but leave the other end connected to the PC?

Because of the quarantine and Home offices, I need to frequently connect my personal monitor to my work notebook. I know that HDMI ports aren't very durable so I really don't want to disconnect the ...
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Extra power through USB3 to make a thunderbolt powered USB switch work better

I have a usb-c thunderbolt HuB that has a HDMI output, a VGA output, 3 USB3 ports, an ethernet one and it has to be connected to a power adapter and to the laptop. I'm suspecting that the power in is ...
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Did I brick my PNY GTX 1080ti oc 11g graphics card?

I'm here to ask if I messed up and burned my new 1080Ti xlr8 oc graphics card. I have a 500w PSU (ZALMAN500-HP). When I took out my old GTX 750Ti and plugged in my new GPU, my PC didn't work. The ...
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pc suddenly shuts off and cannot boot pc anymore

Hello so i suddenly have an issue with my pc that my computer has been doing for a while that when i use my pc it suddenly shuts off and my power supply that is Corsair AX1200i turns red light and to ...
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Laptop not charging consistently on Windows but does on Ubuntu

Setup: I have a Lenovo T440s running Windows 10 which requests 20V and 2.25A/3.25A and a charger providing 20V and 2.25A. I have been having this problem for a while. Essentially, when I plug in the ...
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Computer won't boot, possible causes? Motherboard or CPU [duplicate]

I have a old setup that I haven't used in a while. When I plug it in and turn it on, I see it light up for a second before dying. So far I have tested the paperclip method with the psu and it works ...
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External monitor on Lenovo ThinkPad laptop blacks out randomly

The symptoms: the monitor blanks (turns black) for about half a second before reverting at seemingly random intervals. The setup: a Lenovo Thinkpad T series, with a default 65W AC adapter power ...
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Powershell - When removing AC power value is not changed

I'm trying to make a script that changes Windows power plans depending if the battery is plugged or not. I tried an infinite loop which is constantly checking on the battery status, variable "$...
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External PSU for gpu?

I found an EVGA GeForce 750 ti graphics card and wanted to pop it into a lower-spec machine. However, the PSU is not up to the task. Is there a way to power just the GPU over the PCIe slot? the card ...
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Dell 660s power supply specs

I have a Dell Inspiron 660s slim tower that I'm upgrading. I was wondering if anyone knows if the power supply has enough extra juice to power a evga GeForce gtx 750 ti SC graphics card. Thanks!
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Is using a 8-pin connector for 12-pin ATX 12V power connector ok?

My motherboard supports a 8+4-pin CPU power but my power supply only has the 8pin connector wire. Is this ok or do I need to buy another power supply to support the additional 4-pin?
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Lenovo Yoga 2 - 13" | Will not switch on

Hi guys so i have a Lenovo Yoga 2 13" which simply will not respond. This happened out of the blue. Battery died, won't switch on again. I get a white light on battery light with power supply plugged ...
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My computer turns on, then turns off immediately, without booting

Hardware I am using: Intel Core i7-7700K 4.2 GHz Quad-Core Processor Noctua NH-D15 82.5 CFM CPU Cooler Asus PRIME Z390-A Motherboard 2x Corsair Vengeance LPX 8 GB DDR4-3000 Memory Samsung 860 Evo ...
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Computer turning on and off immediately after CPU chassis was shaken

I was try to move something and it bumped against the CPU chassis, it froze, so I pressed the reset button, since then, the computer is turning on and off immediately, it continuously cycles on-off. I ...
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Screws too loose on PSU

I have an older ATX PSU that for some reason has larger mounting screw holes than usual. (Maybe someone tried forcing larger screws at some point and stripped them?) The holes are now too loose. Is ...
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The performance of an laptop can be affected by the battery and by the AC power adapter? [duplicate]

I have a laptop Dell Inspiron 5567 (Windows 10) and today when I open the laptop I receive that message: "Alert! The AC power adapter wattage and type cannot be determined. The battery may not charge. ...

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