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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11 views

Power supply current rating

I've been researching my problem but really everything I found is complicated and I don't understand it. I bought a GPU with a requirement of a 400W power supply with 12V current rating of 22A. ...
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46 views

Weird sound from a used GPU i bought. Might be a PSU thing?

https://youtu.be/ZRnEYppzEC8 I have a 600W PSU, a N680GTX MSI Twin Frozr 3 and a Sabertooth P67 MB. In addition to this, I have 2 SSD's (one which is empty) and a 1TB HD. Before I bought this used ...
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69 views

Uninterruptible Power Supply Unit Failure, Or Is It the Battery?

I have an APC brand, SUA750 Model UPS unit that has been in service since late 2008. Recently, it failed completely when there was no power outage. (If any power outage occurred, it was for only a ...
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37 views

Intel S2600CP4 Server build, Will not boot. How to diagnose?

I have built a server using this motherboard, upon pressing the power button the fans whur up and lights come on but immediately turn off. There are no beeps, and I have tried a different PSU. I have ...
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49 views

XFX Radeon R7 360 in a Dell Optiplex 380

Will my power supply in an Dell Optiplex 380 let me install a XFX Radeon R7 360 card? I know that it will fit and that I have the correct PCI slot. I also know that I would have to buy a power cable ...
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6 views

Asus x44L Solve the issue of correct plugin

Well, as I recall , I plugged the power cord into the wall before the Asus laptop. This was wrong according to a info message I read when buying my laptop. I could have done this 2 or 3 times before 8 ...
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28 views

hp power supply pinout

Probably the wrong place to be asking this, but yet it seems so right... Has anyone had any experience with power supplies like the dc2100sff's psu? I would like to know what the pinout of the cpu ...
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44 views

Power surge on usb 3.0, usb ports stopped working

Windows reported power surge on usb hub, and since then 4 of my usb ports stopped working, I've tried uninstalling drivers and re-installing them again, but it didn't work. Tried pulling the cable out ...
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73 views

Why are there Fully-Modular PSUs?

I understand the point of Semi-Modular, but with Fully-Modular you really have to attach cables you'd be required to use! Is it only a moneymaking scheme, or is there a point to getting one?
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418 views

I plugged an 8-pin EPS (CPU) cable into the GPU's PCI-E port. Is it damaged?

The r9 290x I wanted to use needs 16 pins, my PSU which I thought had 1 PCI-E 6 + 2, 1 PCI-E 6 and 1 PCI-E 8-pin setups, actually had a second 8-pin EPS cable. I don't currently have something to ...
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32 views

Laptop wont Switch on.. Power button LED Blinks when I press power button

My Laptop is Lenovo T430. Tried following steps with No luck. Refer to my Video here. Try charging the Battery to Full Remove Battery and tried booting it with Power directly. Changed the ...
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3answers
69 views

Ditch AC, Plugging a laptop into a car battery

Hopefully I'm asking the obvious; but my computer is important so I would like more opinions. According to the question Laptop battery: is voltage really important to respect? It seemed their ...
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1answer
177 views

Charging a laptop though a USB-C power port with a low voltage/amperage

Let's say we have a new laptop with a USB-C port - like the new Macbook1 or the Chromebook pixel which, yes, are meant to be charged through these ports -, a good solar panel for smartphones (5V 3A ...
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1answer
13 views

Computer turns off a second after powering on

It doesn't even post. No beeps, flashing lights or anything. All the fans spin up for about a second and then it switches off again. I've tried disconnecting everything, so it's just a power supply + ...
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1answer
25 views

Can I add peripheral power connectors to server?

I'm hoping to add USB 3.0 to the server blade that I picked up for personal use. However, it has no peripheral connectors (3.5" HDD power connector), only a motherboard connector (used), and some ...
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1answer
13 views

System woudn't boot, was it the power supply?

My friend gave my an old server from his work (only reason they gave it to me is because its 8 years old, worked when they had it). When I took it home, I couldn't get the thing to post. I was ...
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2answers
109 views

My power cord only charges at a certain angle

So my laptop's battery has been useless so I've made my laptop AC only. Recently, the cord will only give the laptop life if it is at a specific angle. If you were to draw a horizontal line, and from ...
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1answer
85 views

Can a faulty card work fine except sometimes during post?

I have this strange problem. Sometimes when I turn on the computer or reset, the BIOS hangs with debug code 4f (which is labeled in the manual as reserved). It doesn't beep or post, and the usb ports ...
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935 views

Will A EVGA 500W Power Supply Power a GTX 960?

I am thinking of getting this graphics card for my PC: http://www.amazon.com/EVGA-GeForce-Whisper-Graphics-02G-P4-2966-KR/dp/B00SC6HAS4 I am not sure if my 500W power supply can handle this card: ...
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1answer
26 views

Does cable awg/amps matter for power adapter

I bought a longer cable for my surface pro 3 power adapter, the cable that goes from the outlet to the brick, and I noticed that the power adapter says it takes an input of 1A and the 22 awg cable ...
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1answer
54 views

Can I safely use a USB-Y cable to power a small device?

Say I have a normal USB-Y cable - female and male with data and power connections, and an extra male port with just power connections - normally used to draw extra power from an additional port on the ...
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53 views

PC will only turn on if I position the PSU ATX power cable in a certain way

The past 3 days I've been trying to fix this issue. I just bought a new motherboard and CPU, but I've ran into a problem. My computer will not turn on unless I'm pulling/pushing/positioning the PSU ...
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45 views

Micro-ATX power supply screw alignment

Most of the MicroATX cases have an offset top-left screw like this: But most of the MicroATX power supplies I'm finding have a rectangular configuration like this: Which is standard? Are there ...
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27 views

In order to start my PC I have to put pressure on my EATX power cable

I can't start my computer unless I push hard on the beatx power cable and hold it in a certain position. I'm not sure what the issue is..I got a new motherboard today, as well as CPU so those aren't ...
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51 views

how come my gaming pc overheats when connected to my tv?

As stated on the question, I have had some rather uncomfortable system failures due to overheating. When I was on my 23" Full HD (1920 x 1080) LED monitor the symptoms have not appeared, but when I ...
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38 views

Motherboard or PSU causing reboot loop?

Error description: PC will reboot and fans will power up but will immediately restart before getting to BIOS. No display on screen. No beep sounds from speakers. I've been doing research for now and ...
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40 views

Laptop without battery resets BIOS when ac adaptor is removed

I am using a dell inspiron 15 3537. Here's the thing: If I remove the battery and try to power on, I get a constant beeping sound with screen showing nothing. After that I power it off clicking the ...
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51 views

Identifing monitor DC power connector

I can't measure it precisely but as far as I can tell male has 6 mm outer diameter, around 4 mm inner diameter and center pin probably 1 mm or so. It's the power cord of an LG monitor. I think it's ...
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30 views

Could this be a faulty Laptop adapter or something else?

I have noticed some problems with my laptop's USB ports that I think may be a power problem, though I'm not sure. I have 3 USB ports on my laptop (2 USB 2.0 and 1 USB 3.0). The USB 3 port is on the ...
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1answer
21 views

Are there any safeguards for the case that the ac power is disconnected from a Desktop PC such as an Asus Rog or a small Alienware

Some small form factor PC's such as Alienware (http://www.dell.com/us/p/alienware-steam-machine/pd?ref=PD_OC) or Asus Rog (http://www.asus.com/us/Tower-PCs/ROG-series-Products/) have ac adapters ...
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108 views

Just built a new computer. Power will not turn on – clicks once, then nothing

I bought a bunch of new parts and put it all together to test it all out, before putting it all into my case. I then assembled everything into my case, attempted to turn it on, and nothing happened ...
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42 views

PC starts then stops, then starts normally

I have built a new PC very recently and everything seems to be in place. But when I switch it on all fans, including the CPU spins for just one second and stops immediately (it seems like the PC ...
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2answers
126 views

Have I failed the PSU “paperclip test?”

My computer stopped functioning today so I decided to see if it was the PSU. My PSU is a Cooler Master: V750. I performed the “paperclip test” on my PSU and the fan turned on, However it only stayed ...
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73 views

PCI-e Power - Does 6 + 2 Equal 8?

I'm building a PC for a friend using a Gigabyte GV-N960WF2OC-4GD graphics card which requires one 6-pin & one 8-pin power connector. Now I'm looking at a Cooler Master B700 ver.2 700W power ...
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1answer
30 views

Computer Won't Turn On And Power Goes Out

When I plug in my computer and click the switch on the PSU and then the power goes out (It's the house power) How would I check if the PSU is faulty? The computer I have is a computer that I put ...
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41 views

Should the intake fan of a power supply be pointed upwards or downwards if the computer resides on carpet floor?

I have a chassis where one can hook up the PSU on the bottom only. I have a carpet floor which means that dust is more prone to get into the chassis. There is a filter on the bottom of the chassis, ...
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20 views

Internal HDD stops working and the led indicator not flashing

I have 2 HDDs, one is old and one is new. Recently my PC has a problem. HDD stops working and I sure about it because the led indicator of front panel is not flashing. I removed the old HDD and it ...
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393 views

Kernel-Power 89 (86) entries in Windows system log

Earlier my PC used to reboot randomly showing: CRITICAL: Kernel-Power 41(63) there were 2 AVIRA antivirus file avpbb.sys and other launching at same time, therefore I removed AVIRA FREE EDITION. ...
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1answer
52 views

System changes power mode to Power Saver a few minutes after rebooting

Laptop: Samsung NP3530EC-A0DDX, running Windows 8.1 For some reason, every time I happen to be booting my laptop, the power mode constantly changes to Power Saver after about five minutes since boot. ...
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50 views

5v rails is getting 5.7v even with new PSU

I need help. I'm on my mobile typing this so i'll be word efficient. (English is not my native language and I only have a basic understanding of pc's) What's the problem? After the weekend I tried ...
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1answer
40 views

Can't suspend system

I just installed Bunsenlabs Linux (which is based on Debian 8) and I have troubles with suspend. When I press suspend button the screen just gets black (not turns off) and after mouse move or key ...
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0answers
16 views

Problems with replaced fan on Powercolor 6850

I've been using AMD 6850 for my htpc server for a long time and encountered fan failure, it simply lost one of its blades and started to vibrate and make terrible noises. So I disassembled the GPU and ...
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1answer
16 views

Monitor connected to a surge protector goes blank for a few seconds everytime room lights are switched on

I have noticed this problem in 2 separate locations. In both cases they are computer monitors connected to a surge protector extension cord. Every time the lights or fans are switched on or the ...
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2answers
45 views

Brand new build powercycling, no display

My boyfriend and I have a new rig here with all new parts: MoBo Gigabyte GA-X99-UD3, CPU Intel Core i7-4960X 3600 MHz Ivy Bridge-E, two 8GB of DDR4 RAM, GTX 960 4G video card, 650w Rosewill power ...
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50 views

Display turning off and on

First things first. I have two displays (Samsung 2243NW and 2243NWX) and the second one decided to start turning off and on - like a screen flash. I've made no changes to hardware or software - that ...
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2answers
40 views

Why does my laptop charge my phone even when it's powered down?

I have an HP Envy M6 with a USB 3.0 port next to its charging port, doesn't matter what state the Laptop is in, Sleep, Hibernated, and completely powered down. It never stops charging whatever phone ...
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62 views

HP Proliant ML150 G6 won´t awake from standby

I got some problems with my HP server. It won´t start, although everything seems to be supplied to power. The power supply shows green light, and the power button shows the amber color which should ...
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0answers
29 views

Powering multiple devices on single molex cable

I have some low grade MS Pro PSU, 550W ATX P4. There are 4 molex 4pin connector on one cable. Only one connector is used for fan, but when i try to add something else on one of another three ...
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2answers
38 views

Laptop dedicated GPU - performace drop / variable performance

Laptop GPUs (dedicated and integrated) are driving me crazy ever since I got this computer. I've searched thousands of forums and potential solutions and I couldn't find anything that solves my ...
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1answer
23 views

Ethernet port has no power when ATX12V1 power connector is plugged in

I have an old Dell Intel Connolly: E187242 motherboard that had the power supply go out. After ordering a new one and plugging everything into the correct ports, my NIC does not light up or getting ...