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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PC gets powered up only sometimes

This is one of the most bizarre hardware problems I have ever had, since the 80486 days. Perfectly working PC with a Gigabyte UD2-P55M and an i7, Kamariki IV power supply. I go away for 10 days ...
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2answers
13 views

Existing power supply supported by new motherboard

Essentially, I'd like to confirm that my Silencer 750W Crossfire power supply is supported by the Asus Z97-A. The motherboard states 24-pin EATX Power connector: ...
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14 views

Diskless Windows and Power Faliures

I face a lot of power cuts and can't supply backup to all the computers. Due to this, many of the machines come up with hdd errors where the hdd becomes only readable (especially my SSDs). So, I have ...
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0answers
18 views

Can a PCI-E cable that splits into two…be used on different PCI-E devices?

The way my Seasonic X-1250 PCI-E cables are designed is... There's one end which is a single cable with a 12 hole connector...that goes into the PCI-E port on my power supply. But then the other end ...
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18 views

Whats the cheapest good power supply, motherboard and cpu? [on hold]

I don't earn very much money, so I can't find the cheapest ones? Does anyone have a helpful website that has stuff. Please help me I'm working on a computer build from a slimline computer, but that ...
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28 views

Computer crashing when I play games

Specs: Intel Core i7-3930k Corsair H70 CPU Water Cooler 16Gb DDR3 G.Skill 4x4Gb 1600Mh 120Gb Intel 520 Series SSD 2Tb WD Caviar Green WD20EARX SATA 6Gb/s 64mb Cache SATA3 AMD Radeon R9 ...
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0answers
16 views

Need Help deciding CPU and Graphics card for computer [closed]

What I currently have on my computer: 1 x AMD FX-8320 Vishera 8-Core 3.5GHz Mother Board http://www.newegg.com/Product/Product.aspx?Item=N82E16813157479 500w Power Supply 1 x Cooler Master Hyper 212 ...
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0answers
20 views

Just curious about these pcie cables that comes with these power supplies

My corsair 850 died on me but I still have the cables that comes with it I ordered a evga supernova 1300 g2 and wondering if it's safe to use the corsair pcie 6+2 cables on a evga supernova or should ...
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0answers
10 views

Can I make a 4pin EPS12V to a 8pin PCI-E adapter

I need two 8 pin pci-e for a graphic card, however all I have left is two 4 pin molex and a 4pin EPS12V. I've got two dual molex to 8pin PCI-E adapter what If I cut one of them, cut the male EPS12V ...
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1answer
68 views

Is using a powered USB hub Raspberry Pi DC power and USB data a good idea? Or does it create an odd, circular dependency that could blow the hub?

I have Raspberry Pi model A which has only one USB port. So I bought the cheapest electrically powered USB hub (AC adapter that has an output of DC 5V at 1000 mA) I could find—kind of in the spirit of ...
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0answers
32 views

When laptop battery on “High Performance” it stops charging the battery

I'm using an ACER Aspire 5750G and my laptop specs are: Proccessor: Intel Core i7-2630QM Display: 15,6 LED LCD Nvidia GeForce GT 540M - 1GB - CUDA Memory: 8GB HDD: 750GB DVD Super Multi DL drive ...
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2answers
51 views

Unable to shutdown, who to blame?

My PC has always suffered from this problem: upon reboot, the power, instead of staying up and running until BIOS POST, most of the time (but not always, and that's why I don't think this has never ...
0
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1answer
37 views

2 GPUs with 6+8 pin connectors: does it help to use 4 cables instead of 2?

I am assembling a new pc and I reached the point where I need to connect the various power cables. I have 2 graphic cards, each with 6 and 8 pin connectors. I understand I have to connect both for ...
0
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1answer
25 views

My PSU vibrates audibly. Do I need to send it back?

I have a be quiet! Pure Power L8 530W, which has been working flawlessly for some time now (can't remember, perhaps 9 months?). Recently, it started making a low, vibrating noise which I can hear ...
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0answers
21 views

Dell Vostro 3560: 3NB8W3 battery not recognized, problems with charging

I've been using standard battery for a while, but finally I bought extended battery (3NB8W3, 11.1v 8700mAh 97Wh). Sadly, my Vostro 3560 does not recognize battery properly. I always have "Plugged in ...
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1answer
23 views

How does dual PSU setup work?

This just an academical question, I am not looking to buy anything, I would just like to understand how it works. There is a number of dual PSU servers, eg. they have 2 power supplies, each running ...
0
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1answer
35 views

Re-route laptop dc power jack to a usb port [duplicate]

Because many times my laptop powers off after some movement around the power jack, I thought I would re-route the internal power cables that ends up in the DC power jack, and fit them into a USB. Then ...
1
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1answer
48 views

Reduce power usage while computer is “off” [closed]

Recently I bought a device to measure the wattage from devices. To test the apparatus I measured 6 watts from an IKEA LED light bulb which was supposed to produce 6 watt usage and a few laptop ...
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1answer
50 views

How to judge if a laptop charger noise is a safe “hum” or a dangerous “crackle”?

I've read existing questions and answers on noises coming from laptop chargers (e.g. http://superuser.com/a/104860/112639 and http://superuser.com/a/832501/112639 and have learnt that there are two ...
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3answers
46 views

Computer fans turn on, but nothing else

I've done some google searches, but nothing seems to fix my problem. I just got a computer from a friend, saying that it wasn't turning on anymore. I took it home, powered it up, and viola! beep ...
1
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1answer
75 views

Computer time and bios resets everytime I unplug from wall

I am using an Asus P5GC-MX motherboard with a 700 watt power supply and I cannot figure out why this is happening. First I tried a new good brand battery with no luck. Next I flashed my BIOS and ...
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2answers
24 views

Power connector size for HP 15-d053cl TouchSmart Notebook PC?

Does anyone know what the inner and outer dimensions of the DC connector on the HP power adapter for the HP 15-d053cl TouchSmart Notebook PC is? Also, the name of the connector type would help. The ...
1
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1answer
67 views

Lenovo Ideapad z510 crashes when connected to AC power but works fine with the battery

I use a Lenovo Ideapad z510 running Windows 8 x64 and earlier today, during a snowstorm, power went out. Later, power came back and I got on my computer. As I was using it, I — idiotically — lightly ...
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2answers
60 views

Computer won’t turn on [closed]

I woke up this morning and my computer won’t switch on. I have tried to do the screwdriver trick with the front panel connectors but even that won’t work. Any answers will be appreciated. Specs: ...
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1answer
13 views

New 450w PSU boots up but no post/signal from the motherboard

I have a problem reagrding my new 450w that's not functionning correctly, there is no post or any signal from the motherboard. I made sure that other parts are working. here is the config: CPU: Intel ...
2
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1answer
56 views

HP 4530s laptop works with power cord but won't charge battery

Suddenly, two days ago my HP 4530s laptop stopped to be able to charge its battery. Since I was noting that the whole battery was dying since some weeks ago, I bought a new one. Either with the old ...
0
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1answer
57 views

DC-input motherboard How does HDD get power? — ASRock H81TM-ITX

This may be quite a simple question, but I do not know much of anything when it comes to building motherboards, voltages, wattages, and power. I am looking at this board - ASRock H81TM-ITX ...
0
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1answer
124 views

Can I charge my laptop using a power bank using my laptop charger?

I have a Dell XPS-1530 laptop with a 9 cell battery. It's working fine but I was just wondering whether I could use a power connector or something to plug my laptop charger's 3 pin plug into another ...
0
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2answers
23 views

Green light on my laptop adapter continues to glow for 2 to 3mins, even when it's not charging

I can see a Green light on my dell laptop adapter even when adapter is being used and connected to a power source. As per my knowledge this idicates that adapter is plugged in to power source and ...
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2answers
48 views

How to find the source of a burning smell in my computer?

Recently I find small unpleasant smell (like burning smell) from my desktop computer, not always, but from time to time. I don't know where it is from, but as I turn off the computer and sniff closely ...
2
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2answers
47 views

Static electricity - Our computers were covered with black trash bags for about six months, is that bad?

A laptop and two desktops have been covered with big trash bags to protect them from dust for quite some time. Is there any danger of anything getting damaged from static electricity? Is there ...
0
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0answers
23 views

POE Adapter + TP-Link Outdoor CPE blinking light

I'm trying to set up a wifi network using an outdoor CPE (TP-LINK WA5210G) connected to a POE Adapter (Ubiquiti Switching Mode Power Supply) for an NGO I'm volunteering with. The people claim that the ...
1
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1answer
22 views

How can I measure the power consumption of the different devices connected to my computer?

I recently bought a new graphics card and I want to see if I am going to run into problems trying to use it with my desktop's measly 300W power supply. I am running Ubuntu 14.04. Is there anyway ...
0
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0answers
21 views

Antec VP450 power supply doesn't power on

I have a 3 year old Antec VP450 PSU. It has a power switch behind it which I always switch off after shutting down my PC. This PC is connected to an APC UPS. Yesterday I shutdown the PC and left ...
0
votes
1answer
47 views

Can my 300W power supply handle this graphics card?

I want to but this graphics card: http://www.amazon.com/gp/product/B00IDG3IDO/ref=oh_aui_detailpage_o00_?ie=UTF8&psc=1 It says it requires 300W or more. My power-supply is 300 max. Does ...
1
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2answers
50 views

Windows 8.1 sleep fails if computer left on mains power

This is a weird one. On my Windows 8.1 system, I usually Sleep the computer overnight rather than Shutting it Down. If I wait for the computer to finish "going to sleep" (so the fans stop running, ...
7
votes
1answer
649 views

Why won't my Retina MacBook Pro let me plug the power in without the screen blacking out?

I have a late 2014 Retina MacBook Pro. I run Windows 8.1 via Boot Camp with the latest drivers. It worked fine for quite awhile as a standalone setup. Recently I started using it only with an ...
0
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1answer
32 views

Power Brick humming [duplicate]

When a power brick is humming is that a bad thing? What does it mean. Does having it plugged into the wall directly or in a UPS or in a daisy chain of power strips make a difference
0
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0answers
78 views

PSU very loud on idle system

i have a very weird problem- once in while( once or twice per day usually) my PSU starts being very loud(probably max fan speed) even while the system is idle. The only way to fix it is to shutdown, ...
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3answers
51 views

Replaced burned out PSU still burning smell

So I recently replaced my burned out PSU, and have just started my PC. But I still smell something burned out, although my PC is running fine, what could it be, and what should I do? I just checked ...
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0answers
62 views

PCIe power from a Dell Optiplex 7020

We've just purchased a new Dell Optiplex 7020 to house a PCIe digitiser for use in scientific work. The PCIe card in question needs extra power in the from of a 6-pin 'PCIe' power cable. ...
0
votes
0answers
38 views

Laptop won't turn on, only power button lights up

My laptop is failing to turn on fully. The only thing that happens with the laptop is the power button lights up. It stops lighting up after about 8 seconds of me pressing it and once I release it, it ...
0
votes
1answer
49 views

2 new Caviar Blue hard drives failed within hours on new build

I made this standard desktop build for my father with an Asus AM1M-A mboard, Athlon 5150, 4GB Kingston DDR3 1333MHz (2x2GB), EVGA 430W 80 Plus PSU, and a Western Digital Caviar Blue 500GB HD ...
0
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1answer
31 views

MSI GX660 laptop power fluctuations

Okay. So my trusty laptop has come down with an issue. It won't always take my power supply, resulting in 2 cases. One is that it simply does not receive the power, the other is more peculiar. The ...
0
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3answers
44 views

Burned PSU possibly damaged hardware

My PSU recently burned out, I don't know if other hardware was affected is it safe to buy a new PSU and use my PC as I normally do? How do I check for potential damages? CPU: i7 2700K 3.5GHz GPU: ...
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votes
1answer
63 views

What will make computer parts (PSU, MB, SSD, HDD, Fans) last longer: keeping PC always on or turning off regularly [closed]

Before I continue, there is no answer to this question on StackExchange. One is Is it harmful to keep PC always on? [duplicate] a duplicate of Is it better to leave your computer on all ...
3
votes
0answers
94 views

Notebook's Battery is not calibrated. Operates at 0% for an hour

My problem is that even if the battery percentage is 0 the notebook can stay on around an hour. I have disabled "critical battery action" on my operating systems to use more time my notebook. The ...
0
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0answers
23 views

What could cause an abnormal voltage measure from the PSU besides a defective PSU?

For a while now I've been having random system freezes and reboots, especially when the GPU is under load. I looked in the bios and saw the 12v rail giving out 17v (!). Assuming this is a faulty PSU I ...
0
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3answers
206 views

My GPU stops suddenly and get black screen

I have a Nvidia GeForce GTX 660 graphics card and a dual monitor setup. Sometimes my screens go black and get a warning like: Nvidia Kernel stops responding. I tried a lot of things; ...
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2answers
46 views

Desktop not powering ON

I have a weird issue of our desktops supplied to customers. At customers site they are not turning on but when I bring it my office it is working fine. It tries to start at customer site, fan starts ...