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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2answers
19 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 ...
0
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2answers
274 views

apple macbook pro 15" replacement battery and charger

My MacBook Pro's battery has died. Capacity is down in the 2000s and cycles are at about 250. To compound the problem my MagSafe charger has decided to start burning through the cable near the bit ...
0
votes
2answers
13 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 ...
2
votes
1answer
22 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 ...
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0answers
8 views

My Brand new cpu hanges

here is the detail of my pc which I have purchased around 10 days before asus 2gb ddr5 RADEOn R9 270X COOLER MASTER SEIDON 120V PLUS COOLER FAN AMD FX 9590 PROCESSOR CPU CORSAIR VENGEANCE DDR 3 ...
2
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2answers
3k views

DELL Inspiron N 5050 doesn't Power On until I Plug-in the Charger

I bought a Dell Inspiron N 5050 last week, and recently discovered a problem with my laptop. It doesn't Power On until and unless I Plug-in the charger. After I plug-in the charger, it boots up ...
0
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0answers
7 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 ...
2
votes
3answers
649 views

Is it safe to tilt a UPS battery while in use?

I've got an old UPS for which I bought a new battery. The new battery is different in size (longer). Thus it doesn't fit in the structure. However, if I keep the new battery vertically, I can manage ...
1
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1answer
16 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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3answers
25 views

Real Machine randomly refuses to start

Folks I`m completely clueless. I have a machine with the configurations above. By some strange reason at random times it refuses to boot, fans will spin but seems no power enough is generated to get ...
0
votes
2answers
3k views

How can I tell if my UPS is functioning properly or not for my PC? [on hold]

For the last two days, my Uninterrupted Power Supply (UPS) has failed to function properly. I charged it for 24hrs and again checked that when the power failed my PC was automatically shut down. But ...
0
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0answers
11 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
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0answers
31 views

Computer shuts down under load [on hold]

I recently purchased a 290X from AMD and installed it in my system. Downloaded all of the drivers and got it all up and running. Was absolutely blown away by the performance, it running 80FPS ...
0
votes
1answer
26 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 ...
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0answers
23 views

Huge Decline in Speeds and Disappearance of SSD [closed]

I purchased the parts of my computer a few years ago and for the past three or four months, the performance has started to decline. I run a two drive system: a 128 GB OCZ SSD for the OS and a 2 TB ...
1
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0answers
85 views

Graphics card fans very loud, no video/unable to boot

So let's back up a few months. I came back from work one day to find my computer on (I remote desktop to it occasionally) but my graphics card (Gigabyte GTX 770 OC-2GB version) fans running very ...
5
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1answer
673 views

Is DELL's HP-P2507FWP PSU's 20-pin connector wiring non-standard?

My old PC's ATX PSU died and I got a replacement in the form of a DELL 250W Power Supply model# HP-P2507FWP. It has the exact set of connectors (except for an additional, unused, 6-pin connector), ...
0
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1answer
17 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 ...
1
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2answers
38 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, ...
0
votes
1answer
2k views

CPU fan turns on for a second and stops, PC does not start at all

I have checked my PSU and it works fine. When I turn on the MOBO, the CPU fan, case fans and the psu fan itself turn on for half a second and then turn off. The PC remains off. The Bios light turns ...
7
votes
1answer
591 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
29 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
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2answers
5k views

Can a faulty battery cause my laptop to shutdown even on AC line? (battery installed AND plugged in together)

Until recently, I experience something rather annoying (and troublesome) with my laptop. It spontaneously shuts down itself without any warning, it restarts. No blue screen, no hanging program, just ...
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3answers
2k views

PC powers up then switches off within a few seconds

I have a desktop PC that is now refusing to switch on properly. The fan will come on, but then about 3 to 5 seconds later it shuts down. Pressing the power on button a second time does nothing, not ...
0
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0answers
62 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, ...
0
votes
3answers
43 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 ...
0
votes
1answer
3k views

EVGA Geforce GTX 760 ACX Installation issues

I recently purchased a new Geforce gtx 760 from EVGA with ACX cooling, and I'm quite confused with the power supply. The card came with 2 PCI connectors, however one was a 6-pin and the other was an ...
1
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0answers
36 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
18 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
44 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 ...
5
votes
3answers
11k views

My computer doesn't start - it is stuck in a turn-on, turn-off loop

When pressing the power button, my computer starts making start-up noises, but after a few seconds it shuts down. Then, after 2-3 seconds, it automatically starts turning on again and a few seconds ...
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votes
1answer
51 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 ...
0
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3answers
39 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: ...
3
votes
0answers
68 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
votes
3answers
120 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; ...
2
votes
2answers
2k views

Dell inspiron n5010 has failed to recognize AC adapter

Recently my dell inspiron n5010 has failed to recognize my 90W adapter (despite powering it just fine). Full error message: "The AC power adapter wattage and type cannot be determined. the ...
0
votes
1answer
3k views

Workaround for Dell “Power Supply Not Recognised” issue

So, I have a Dell Inspirion and the power supply port appears to be damaged. Basically when I plug it in I get a nice popup telling me that it couldn't detect that its a Dell power supply so it won't ...
6
votes
6answers
15k views

Can you plug-in the battery while laptop is on AC only?

I'm using my laptop at home with battery removed and only connected to the AC power. However I'm lacking the mobility as my power cord is kinda short. Is it safe from electrical point of view to plug ...
0
votes
2answers
3k views

My Asus Laptop Power Supply is Broken — or is it?

System is an Asus N53S laptop. For several months I've been having the standard problem with a flaky DC plug that doesn't work unless it's positioned just so. Just to make life more fun, the battery ...
3
votes
3answers
3k views

After being shutdown, why won't my computer start without leaving the power unplugged first?

For the past few months, whenever I shut my computer down fully and leave it off for more than a few minutes, it won't start back up without an elaborate ritual. This is an ordinary shutdown, so the ...
0
votes
0answers
20 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
votes
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 ...
0
votes
1answer
1k views

Battery detected but not charging (remains 0%)

I've recently bought a new, 6600 mAh battery for my Acer Aspire One Netbook (AOA110, ZG5 Model) that refuses to charge. My adapter will charge the old battery (although it only lasts 10 minutes), so ...
0
votes
0answers
11 views

Laptop fan starts, stops, starts, stops and continues like this

I have a Dell Latitude E5430. With normal BIOS settings my fan was not working until the core got heated upto 60 C. I installed speedfan to control my fan. I have set the fan to a 100% all the time. ...
0
votes
1answer
47 views

I have some problems with my power supply. Or maybe my Graphics Card?

I have some problems with my PSU. Sometimes when I start on the computer I can hear weird motor-like sounds coming from the PSU but it is probably the fan hitting a component or something, but it is ...
13
votes
5answers
2k views

What is the 6-pin power connector on an HP ProDesk?

I have an HP ProDesk 600 G1 desktop PC, and I'm upgrading it with a new graphics card and a new power supply. Now, the problem I'm having is that the motherboard in the PC doesn't have a standard ...
0
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0answers
10 views

Using Nzxt pp500w psu with new hardware - Safe?

I have Nzxt pp500w psu with Nzxt alpha Case. I'm planning an upgrade to the CPU and the motherboard to the following comination: Intel Core i5 4460 3.1Ghz (3.3Ghz Turbo) LGA1150 Arctic Cooling ...
0
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0answers
33 views

Dual PSU Advice

i have a fairly simple question, that will likely have a complicated answer. i have this pc | / Specs off the top of my head as the pc is dead atm: CPU: AMD Phenom x4 HDD: 750GB 7200rpm Sata 6 ...
0
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3answers
3k views

Should my HP Pavilion dv6000 operate w/o battery pack while using electrical plug-in? Mine won't

While using my computer, it shut down, and I cannot get it to turn back on. I have tried removing the battery to see if the computer would work without it, but it did not. The light is on where the ...
15
votes
4answers
6k views

Can I run a computer using DC power?

I always thought that using a conventional UPS with a PC is highly inefficient. Power goes from AC -> DC -> AC in UPS and then AC -> DC in PC SMPS. Since PC works only with DC (12, 5 and 3 volts) It ...