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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2
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2answers
283 views

Can using a under powered laptop charger make my notebook shut down under heavy load?

I have a XMG P501 gaming laptop based on Clevo P150HM models at the moment connected to an under powered laptop charger. It is shutting down when under heavy load (3dmark, some games in particular) ...
15
votes
2answers
865 views

Identify AC Power Cord with rotated pins

Is this AC power cord connector a standard one? The pins seems to be rotated 90 degrees. This ATX power supply unit (Silverstone ST1500) did not come with the cord and I am hoping to be able to get ...
-1
votes
1answer
186 views

High pitched whine coming from the GPU/PSU?

This problem only happened today, and it has been getting really annoying. SPECS: Intel Core i3-3210 @ 3.2GHz 4GB x 2 RAM AMD Radeon R7 200 Series Now, Whenever I play games at a supposedly ...
8
votes
4answers
3k views

How can I tell how healthy my PSU is?

Simple enough question, I have a hunch that my PSU isn't powerful enough based on a couple of clues: One of my screens flickers, and I read on a couple of websites that this could be caused by the ...
0
votes
1answer
30 views

How to store personal data locally (non-cloud solutions)? [duplicate]

As the title pretty much summarises, storing data in External HDD (especially the ones which require power supply) is not exactly a risk-free solution. I have burnt my hands more than once even with ...
0
votes
1answer
495 views

Can a laptop power adapter bought with a UK power cord be used with a US power cord?

I bought a Lenovo laptop here in the UK and am shipping it off to my girlfriend in the US. Can she use a standard US power lead for the lead that goes from the laptop power adapter to the wall outlet ...
0
votes
0answers
19 views

PC Shut Down & Blue Screening?

I have recently upgraded my motherboard in my computer before that I had a standard small board but now I have a big gaming one (forgot the exact size names think its atx or something) Anyway, ...
0
votes
1answer
403 views

Connect ASUS R9 280X to Corsair HX850

Need to connect an ASUS r9 280x graphics card to Corsair HX850 PSU. There are 6 pin and 8 pin power connectors on the graphics card and 8 pin PCIE power connectors on the PSU. Cables available for ...
0
votes
1answer
86 views

Advent T1 (All in one PC) - screen going blank

I have an Advent T1 (all in one PC) that suffered from the under powered 12v 15amp PSU issue outlined here The computer would run for a short amount of time, and then power cycle. I've replaced the ...
0
votes
1answer
137 views

How can a power supply rated 7A be strong enough for two devices rated 5A? [closed]

I am not understanding something fundamental to amperage: Consider this adapter which outputs 12V 7A. It claims that several (eight, in this case) devices running at 12V 5A can draw enough power from ...
1
vote
1answer
727 views

-48VDC power required: How to make it work with 110VAC input

I recently bought a used NetOptics TP-GCU-48V network tap on eBay for use on my home net. This is one of their earlier models and has been discontinued for a number of years. They have two versions ...
0
votes
0answers
57 views

how do I know whether a fan error on post requires action?

I have an HP a6400f PC, (it's a tower) and after a brief power blackout, I started getting a generic "Fan error" problem upon startup. I can click through the error and boot into Ubuntu. ...
1
vote
2answers
84 views

Do power adaptors automatically adjust current and voltage?

I purchased a new power adaptor (19.5 V, 3.33 A, 65 W) for my Compaq Presario v3000 laptop, as replacement for the old one (18.5, 3.5 A, 65 W). It is listed as compatible with my laptop model. Does ...
0
votes
1answer
123 views

Diagnose Power Supply Failure?

I have a single 500W supply powering my home server. I think I have derived that a hardware failure is the problem. The following symptoms are prevalent across multiple installations of Win7. ...
0
votes
1answer
154 views

Computer force restarts when graphics card is installed

Specs: Intel Core i7 4770k with Corsair H100i Asrock Z87-ITX Corsair Vengeance 8GB x2 Rosewill HIVE 650W EVGA GeForce GTX 770 Runs to monitor through HDMI cable from GPU I've been troubleshooting a ...
0
votes
0answers
12 views

Debugging power on issue

First off I don't know if this is the correct fora, for this kind of question. My personal Acer Aspire 5745G has an issue, namely that it usually has issues powering on. The issue is that when the ...
2
votes
1answer
134 views

What adhesive should I use to secure power jack on an Acer/eMachines laptop?

I was going to use superglue, not sure how it'd handle the heat though and I'd be afraid of it getting in the jack. Two way tape seems to be a plausible solution (I've used it in automotive ...
0
votes
2answers
284 views

Computer wont boot. No picture on monitor, no usb power plus more

Tried to turn on his stationary computer after being turned off for one night. It is a few years old, components are somewhat strong (Was built to be a gaming pc). No picture on screen, tried two ...
0
votes
0answers
200 views

Replaced screen in Acer Aspire, now won't power on or acknowledge it's plugged in

I recently replaced the LCD screen from a different model Acer Aspire (Both 15.6" , same connector and LED backlight) in my laptop. I've replaced LCDs from other laptops before, so I'm fairly ...
3
votes
1answer
200 views

PC not turning off

I am trying to shut down my PC but it is not shutting down! I am using windows 7. When I say shut down (from start menu), windows is shutting down screen comes up. After several seconds display goes ...
2
votes
0answers
102 views

HP ProCurve: Iterface X is Link Down (errno 365)

In my Home Environment im Using a Windows Server 2012 R2 datacenter (received from dreamspark) to manage my "home-domain". My server has 4 physical network connections, used like this: Nic 1 and Nic ...
0
votes
1answer
127 views

My PSU makes a VERY LOUD NOISE when watching video in Firefox browser

After Firefox update now every time I watch video I have very loud noise from PSU. It is so loud that the first time I heard it I got scared. My friend told me not use a "stable" but get an Alpha. ...
1
vote
1answer
32 views

my computer doesn't charge; the plug on my computer doesn't work

my computer NEVER works on just pure battery power. It always has to be plugged in. It always says "0% available. Not charging" but again, will work when its plugged in. Is this faulty ...
0
votes
0answers
95 views

My new motherboard doesn't start

I've purchased the following components for a new machine: Asus Z9PR-D12, Be Quiet! E9-580W 80+ Gold, Intel Xeon E5-2620 2.1 GHz, Crucial 16 GB DDR3 1333 MHz CL9 ECC Registered. I assembled the ...
0
votes
3answers
91 views

Blocking the high pitch sound from laptop power supplies

Many power supplis for electronics, especially laptops, emit a veey high pitched noise. While for the most part this soind is too quiet to bother anyone it can sometimes become obnoxious. The simple ...
0
votes
1answer
1k views

Nvidia GTX 780 cable installation

I have researched online but I am not confident in how I should connect of my GFX to PSU and MB. I have checked the manual which came with the PSU and the manual which came with the case, none of ...
-1
votes
1answer
81 views

PC Speakers, misplaced power adapters

The goal: I need to be able to play sound on some computers, but the quality doesn't matter much. The situation: Somehow in our office move, the power adapters for two different sets of speakers got ...
0
votes
2answers
247 views

Possible short circuit after plugging a wrong cable?

So basically,I switched the power cable that goes in the monitor with the power cable that goes to my PC box since they look the same. My PC worked like that for 1 hour, untill I realized I messed up. ...
0
votes
1answer
72 views

New PC build, PSU Wattage confusion

I am building a new PC to use as a home media server. My computer parts have arrived (apart from the CPU) and I intend to build next week. I'm having some problems figuring out whether or not the ...
0
votes
2answers
749 views

Power supply or graphics card? [closed]

I have been having issues with my PC randomly shutting down and believe I have narrowed it down to two possible issues, either my PSU or my GPU. Back story: I got a newish computer (less than 1 year ...
1
vote
0answers
64 views

Keep getting electrified by computer power plug

I recently built a desktop computer, however whenever I move it to a different room for instance, and I accidentally touch the plug pins (UK), I get a quite significant electric shock. Is this a fault ...
0
votes
0answers
30 views

My PC crashes without any message

Is aerocool e80-500W compatible with Haswells? Motherboard: asrock z87 extreme6 CPU: i7-4770 RAM is compatible with this MOBO. I disabled C-states in UEFI howerver it crashes sometimes CPU is not ...
0
votes
1answer
18 views

External hardware to emulate BIOS power management (stay off, turn on, last state)

I have multiple scientific devices, each with an embedded computer and a no-frills BIOS. The single feature I really miss is the power management setting that specifies what to do after power loss: ...
0
votes
0answers
35 views

Reduce voltage on psu from 52v to 12v

I'm building a mining rig and is planning on using a ESP120 HP 3Kw 52v powersupply. I've seen someone get it down to 48v with this mod, but i wonder some one got it down to 12v? Or is it not possible? ...
6
votes
2answers
2k views

How important are the power recommendations for graphics cards

I recently upgraded to a new graphics card and due to some limitations, I had to install it in a questionable configuration. My old card had one 6-pin power connection, the new card has two 6-pin ...
0
votes
1answer
517 views

Can't screw PSU to computer case

As a software engineer willing to know more about hardware, I have started the dangerous quest of mounting my home computer myself. The part I've been struggling the most so far is screwing things ...
2
votes
1answer
150 views

Weird alarm sounding on my computer when under load, but no overheating

I am having a rather odd hardware issue and to be honest, I am not quite sure what is causing it. I have been building my own systems for over 10 years and have all kinds of qualifications, but this ...
1
vote
2answers
104 views

Power suppply sounds like a hard drive being defragmented

Came back from a holiday and noticed that my computer makes a new sound: the sound of a (quiet) hard drive being defragmented, i.e. reading/writing lots of data. Was worried it was one of my hard ...
0
votes
2answers
278 views

UPS will work on power but not battery

I have an old APC Back-UPS 200 I'm hoping to use for my PC. Connected to power it works fine. When unplugged it emits a "i'm on battery power" constantant tone. The 2 plugs on the back are not ...
0
votes
2answers
48 views

Are my devices severely underpowered?

I have a terrible setup. But first, let me say that I used a voltage meter to get a reading from my outlet, and it was starting at 119.5 volts right off the batt, with nothing plugged in. I am ...
0
votes
0answers
95 views

Powering a HP BL680c Blade Server Without a Rack

I picked up an old HP BL680c from a computer surplus store and have no rack with which to power it. The board seems to indicate that it merely requires 12V in. When I try to run it off of regular 12V ...
1
vote
2answers
310 views

Need assistance in connecting my PSU fan cable

I noticed that my PSU got really hot during gaming (to the point where it shut down my computer). I searched my PSU's model name (AXP-630P12P) and it said that the fan on the PSU was supposed to start ...
1
vote
2answers
287 views

Melting/smoking Universal AC adapter

So I own a Samsung RV520 for 2 years now and 3 months ago my AC adapter stopped working and had to replaced. I went to the closest computer service and they gave me an universal AC adapter. Now, the ...
0
votes
1answer
208 views

PSU coil whine, black screen & loud gpu fan (need help)

As of 1 week ago my computer started having some really weird coil whine coming from the PSU, and my monitor became black a few times and you could hear the GPU fans go 100%, so i instantly went and ...
0
votes
1answer
282 views

Battery recharge functionality broken due to short in AC adapter?

I have a problem recharging the battery of my netbook, an ASUS Eee PC 1025C. Since last week the LED of the AC adapter doesn't light up when it is connected to the wall. The netbook won't turn on ...
0
votes
1answer
107 views

Computer crashes when streaming Team Fortress 2

New computer. Played TF2 for 15 minutes, computer crashed and on boot it said something like PC shutdown because of power supply surge detected. I fixed the problem by playing TF2 at the worst ...
0
votes
0answers
69 views

Hard drives not always recognize

I'm having an issue. 80% of time when I power on my computer my hard drives aren't recognized (on BIOS). It's really random. I have a 4770k i7, an asus maximums IV hero, an SSD kingston 128g, a ...
0
votes
0answers
24 views

Darker patches on laptop monitor

I have a Lenovo G560 laptop, and the monitor is a LG Philips LP156WH4-TLA1. I have noticed some darker patches, like two of them, to the right of the screen that are slightly darker than their ...
1
vote
1answer
81 views

Laptop won't boot without power cable connected

My laptop is an Acer Aspire 5750 that used to run Windows 7 but is now dual-booted with Ubuntu 12.04 (now my predominant OS). Recently an annoying bug developed in that my laptop won't boot without ...
1
vote
1answer
540 views

Checking if NVIDIA graphic card crashes due to an underpowered PSU

I've started playing some newer games lately and encountered frequent, intermittent crashes printing errors such as DXGI_ERROR_DEVICE_HUNG, DXGI_ERROR_DEVICE_REMOVED, or similar. Researching reduced ...