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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30 views

why wont my custom built PC boot? [on hold]

I turn it on and the lights turn on the fans are spinning but no picture turns up, and when it's on it'll sound like its powering down and then it'll fasten up again and it'll keep doing this. My ...
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1answer
13 views

Overseas parts power compatability

I'm ordering parts for a new computer and they're way cheaper on Amazon, but I'm in New Zealand which runs 240V as opposed to America's 110V (I think). Will the parts be fine if I just get the power ...
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4answers
39 views

power button.Wont turn pc on or off

I have a custom made desktop which is 5 1/2 years old. The computer was working perfectly until I moved. After I set up the PC again, I couldn't consistently turn it on and off. When I did get it on, ...
1
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0answers
27 views

Make certain programs run when connected to power supply (laptop)

I'm running Windows 7 64-bit on a Lenovo Laptop (X220i Tablet) I was wondering if it was possible (and if so, how) to have a list of certain programs that will run automatically if you are connected ...
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1answer
25 views

Laptop power supply unit compared to PC power supply unit

PC power supplies are relatively huge compared to those used with laptops. But why is this so when a laptop today can have an equal level of performance as a high end PC? Are they both switching ...
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2answers
28 views

Converting a computer PSU to a bench power supply

)I have read a number of articles dealing with the conversion process and think I can manage to get there if I am careful and take it step by step. However my starting point is a box of PSUs that I ...
0
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0answers
38 views

PicoPSU problems with BioStar A68N-5000

I build myself a low power NAS system and I'm trying to power it with a PicoPSU and an external brick power supply. When I turn on the power the case fan starts turning for a second and then stops ...
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0answers
12 views

What depth of discharge does 0% in a UPS correspond to?

When a UPS like an APC Smart-UPS shows 0% charge remaining, does it mean the deep-cycle batteries are completely discharged or that they're at 20%?
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15 views

Nvidia Tesla C2075 PSU requirement [duplicate]

Can I install a Nvidia GPU Tesla™ C2075 to my PC that has 600W power supply unit? Thanks for any helpful answers!
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2answers
31 views

Computer is Shutting off Randomly Throughout the Day - Need to Tilt Case to Restart

Throughout the day, my Windows 7 desktop system is shutting down without warning every 2-6 hours or so. The frequency seems to be getting greater, but I'm not yet completely sure of that fact. This is ...
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1answer
35 views

Something fried in PSU, but PC still works?

I just finished cleaning the dust from my desktop PC with compressed air. When I put everything back together and plugged it to power, there was a brief flash of light and another after I booted it. ...
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4answers
128 views

Is it safe to power access point from cigarette lighter?

Access Point requires AC power adapter with 12V and 1A output. Can I use cigarette lighter adapter (usually intended to be used to charge laptops in a car) for this device? Cigarette lighter adapter ...
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1answer
33 views

Connect Radeon R9 290X DirectCU 2 to Corsair HX850

I have received a new graphics card after my old one died after a couple of weeks The card is a Radeon R9 290X DirectCU 2 and i wish to install it I got a single wire with it; one side has 8 pins and ...
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0answers
11 views

Can I diagnostic/check my PSU?

I'm soon about to upgrade certain parts of my computer, CPU, Motherboard, Memory.. those parts are from 2009, and have served me well through countless hours of programming and gaming. my PSU is from ...
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2answers
36 views

PSU Noise when turned off

When my PC is turned off and I bring my head very close to the PSU, I hear a high frequency noise. Is that normal? I can't hear when I am like 2 metres away from it. And it's only there when turned ...
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0answers
25 views

Would intermittent contact with the service voltage and capacitors in a power supply (inrush current) damage a computer?

If I plugged my laptop AC Adapter power cable into a UPS, causing sparks to blast out (and being unable to insert it due to the UPS being seemingly not designed for this type of plug, for whatever ...
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0answers
60 views

Agghhh! UPS Back-Up, Laptop Charger, Sparks

Boy… ok. This is so frustrating! Ok so, I've been getting a whole lot of problems with the electrical grid here lately: spikes, surges, lows, brown-outs, all kinds of problems, it's terrible, ...
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0answers
18 views

Computer starts and shuts down. After pushing the power on, it functions normally

Enviroment: * I have a working room with a common power switch for all the room. Every time I leave the room I switch the power off. * In this room I have a Fujitsu Siemens computer running Windows ...
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0answers
19 views

Failing CPU, PSU or Motherboard?

So i have a HP desktop and when I press the power button all sounds well (fans, hard drive) but then it turns right back off within 7 seconds. There are No beep Codes, or noises. So I am trying to ...
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1answer
44 views

Constant beeping with new PSU, no video output

So, my friends computer is not producing video output. The monitor works, I've tried the CPU and RAM inside of my computer, so I know they work. On the initial build we forgot standoffs and the ...
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0answers
23 views

ASUS X501a does not start up(fan spins, HDD does not spin, black screen)

Repairing my friend's ASUS X501a laptop. After power up, it goes into a black screen. The fan spins a few seconds after powering up , but HDD refuses to spin. I have tried the following: Plugged a ...
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0answers
20 views

Two PC's, shared power grid, can this be reasonably done?

I've got quite a data headache. Motherboard A has partially failed. I replaced it with board B. Oops, board B won't play nice with the RAID card. Oops again, part of the backup of that RAID array ...
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2answers
37 views

Does this psu have enough power for this graphics card?

PSU: http://www.newegg.com/Product/Product.aspx?Item=N82E16817139049 GPU: http://www.newegg.com/Product/Product.aspx?Item=N82E16814125491 While looking over for the specs for the PSU, I noticed it ...
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1answer
18 views

Disconnection laptop/notebook power supply

I need to alter some settings in my BIOS and the process requires me to switch off my computer and disconnect my power source. ...
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0answers
15 views

External USB powered hard drive

Is there any way I can connect my USB powered external hard drive and a power source to my Samsung tablet? The HD requires more power than the tablet provides. My Galaxy Note 3 powers and reads the HD ...
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2answers
50 views

12 volt motherboard power connector

I'm having an issue using a motherboard I bought recently and a pre-existing power supply. I'm using a Gigabyte Z97X-Gaming 3 Intel Z97 (Socket 1150) DDR3 ATX Motherboard and a Corsair GS 600 as my ...
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2answers
56 views

Troubleshooting PC power-on irregularity, narrowed down to ASUS VRM Spread Spectrum, why?

There are many resources online regarding the issue when the PC shutsdown a few seconds after pressing the power button. I have a variation of the problem which is reproducible under certain ...
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1answer
65 views

Computer shuts down after a few minutes

So I spent all day yesterday trying to figure out what was wrong with my computer. The specs look something like this (before replacing the board): Z77 MSI M Power Samsung 840 Evo SSD 16gb Ram (2 ...
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1answer
78 views

External Hard Drive To Android Tablet and Power Supply

Is it possible via USB Y cable or any other means to connect a Samsung 10.1 30 pin to an external hard drive and at the same time, an external power supply to the Hard Drive. I have concluded getting ...
2
votes
1answer
31 views

6-to-4 pin power adapter · Red wire connected on black wire?

I just bought an nVidia GeForce GTX 550 Ti, which requires a 6 pin power connector, which my PSU doesn't have. However, it came with a 6-to-4 pin adapter. But when I connected the 4 pin connectors, ...
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0answers
46 views

Getting constant APPCRASH on Kernelbase.dll

Specs: GIGABYTE GA-990FXA-UD3 AM3+ AMD 990FX + SB950 SATA 6Gb/s USB 3.0 ATX AMD Motherboard AMD FX-6350 Vishera 6-Core 3.9GHz Socket AM3+ 125W Desktop Processor FD6350FRHKBOX G.SKILL Sniper Series ...
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0answers
103 views

CPU, GPU fans spinning at full speed after shutdown

My computer has been running fine for 4 years, but yesterday it starts to exhibit odd behavior: After I shut down the computer, the CPU and GPU fans start spinning at full speed (everything else ...
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2answers
58 views

LED Case Lighting Installation

I just purchased the following LED Kit to use in my Corsair 760T case. What should I purchase in addition with what's included to have these LEDs work inside my case using a 1300W G2 PSU? The bundle ...
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1answer
25 views

SMPS with long connector cable

Hi I have a Cooler Master Elite 371 case which has a PSU on its bottom. Recently, I have purchased a MidRange GPU due to that SMPS connector for CPU (4-pin) and ATX 12V Power connector became short to ...
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0answers
114 views

How to optimize battery lifespan of Lenovo Z510?

I just bought a Lenovo IdeaPad Z510 laptop, and before I boot it for the first time, I want to make sure to know the exact proper care to ensure the best optimization of the battery's (4 cell 48 ...
0
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0answers
27 views

Attaching SCSI drive through USB

I have a number of wide, 68-pin SCSI drives for which I need to copy the data off. I have tried to use a wide-to-narrow SCSI adapter (68-pin to 50-pin) coupled with an Adaptec SCSI-to-USB adapter ...
1
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1answer
37 views

my laptop is not charging when switched on

I have an satellite l735-11f laptop and i have been facing a problem where the laptop battery does not charge even when power cable is plugged in. I have noticed though that i am able to charge my ...
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0answers
22 views

PSU making noises coinciding with bad gpu?

I recently experienced some strange behavior from my system and I wanted to get your opinions on what it could be. First off, dem specs: ASUS P5Q Pro Mobo PC Power and Cooling S75QB 750W Intel Core ...
2
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2answers
46 views

Using differently rated adapter for router?

So a lightning strike seems to have blown my router adapter which had a 12v DC 2 amp output adapter. I am currently (no pun intended) using a spare adapter with 12v DC 1.2 amp output. This works ...
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2answers
67 views

PC Reboot When Stressed

My father bought a new rig last week. It's a HP Envy Phoenix with: GEFORCE GTX 780 3072MB (Think it had GTX 760 stock) Intel i7 4770 3.4 GHz 16GB of RAM ... When under heavy load the computer ...
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3answers
86 views

Spare laptop power adapter input amps differ from OEM. Does it matter?

I purchased a spare power adapter for my ASUS Q500A laptop. When I received it, I checked the specs and found that they differ than the OEM adapter. The OEM input is 100-240V 50-60Hz 2.0A. The ...
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1answer
61 views

Battery reports it's fine, but notebook won't boot /wo AC plugged in

I am running Acer Aspire Timeline Ultra M5-581TG. I opened it up to clean (as I've done twice before), assembled it back and now observe weird behaviour: the laptop won't react to the power button ...
2
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2answers
53 views

Dangers of using external power source with internal hard drive

Is it okay to connect a internal hard drive (IDE/SATA/SCSI) to an internal controller (e.g. on-board the motherboard) and supply the power via another power supply or an external unit like the one ...
3
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6answers
282 views

Gaming blew fuse and causes funny smell: how to overcome?

I've been gaming for a while now. When playing certain games this PC goes into overdrive. The fan starts to sound like a jet engine it get so busy. Also I have smelt a smell which smells like glue and ...
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2answers
64 views

Linux: disbale USB without disabling power

TLDR I want toggle between the following usages of a usb-port via the terminal: use like a normal usb-port only supply energy to charge Story I recently got me something like a magna doodle ...
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2answers
52 views

Computer does not boot, often

I've ran into a issue with my computer that it does no longer reach POST, but simply powers on for a fraction of a second and powers off. But this is not always, some times it boots just normally and ...
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1answer
19 views

PC crashes randomly after BIOS-Reset

my PC crashes randomly since 3 weeks - just turns off, no shutdown. no warnings, no errors BlueScreenView doesn't show anything (0 errors) no sound-warning Event-ID: 6008 System was shut down ...
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3answers
59 views

Are SATA cables interchangeable?

I just bought a new Seasonic Power Supply Unit. It didn't come with enough SATA cables for my current setup, but I have some cables from previous power supplies (also Seasonics) that I've purchased. ...
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2answers
78 views

Connecting mother board, power supply, and tower

I am working on putting together a desktop for the first time and and ran into a problem, I am not sure how to connect the fans that came in my tower, my power supply, and connect them all to the ...
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1answer
87 views

Toshiba Satellite C850 boot loop

I've got a Toshiba laptop acting strange on me. Any thoughts appreciated. C850-11C PSCC2E AMD E1-1200 APU Windows 8 UEFI Problem: Laptop cant restart. If i shut down the OS or restart, or it ...