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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Dell Inspiron 3420, Charger Plugged in , Charging, But Battery Percentage not going up

I got a problem from last few days, searched every where for solution but all in vain. Description: I have DEll Inspiron 3420. When I plug in Charger,it shows charging but Battery level remains at ...
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32 views

How can I know max power output of a power supply in a LCD tv? [on hold]

I would like to integrate an Atom mb inside a 22 inch tv. It fits there, I will take heat into consideration, etc. The mb will use a 12v DC pico psu. As the TV power source already supplies a 12V ...
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1answer
19 views

What does Lexmark mean by 25W universal power supply?

I have a Lexmark x5650 printer/scanner combo but I lost the power supply when moving. Lexmark's site says the following regarding the power supply: Power Supply 25 Watt Universal Power ...
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3answers
4k 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 ...
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6answers
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Can a grounding problem damage computers immediately?

Can a grounding problem damage computers immediately ? I have transferred my office. New office did not have grounding. I tried to boot 4 computers. Two of them booted. One of them hung while ...
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4 views

PSU 12V power regarding to combined power output

I bought an FSP Hyper 600W PSU. Because the new PCI-E VGA required bigger PSU than what i already have ( 500W ) The VGA requires 500W with 42A on 12V on 8pin connection. The PSU have 6+2pin so i can ...
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1answer
33 views

Macintosh SE PSU Servicing?

First thing's first: I take full responsibility for any injury sustained while servicing a PSU. Any advice offered here is to be considered purely subjective. I own a Macintosh SE, which was ...
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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 fine,...
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Having a rough estimate of energy consumption of the computer.

I'm developing an app which needs to know about the energy consumption on computers (On windows). I realized the OS has no functionalities to support this directly, so my workaround is collecting info ...
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6answers
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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 24-...
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2answers
108 views

Is GTX 960 supported by Intel Chipset Q75?

Intel chipset Q75 supports PCI-e x1, x2 and x4. I have a similar problem as in the thread What is the 6-pin power connector on an HP ProDesk? but with HP Compaq Pro 6300 Business PC. I wanted to ...
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12 views

Cannot turn on PC immediately after reconnecting power

I'm used to unplug power cable after shutting down the PC. Recently, my PC started to behave strange: when trying to turn on the PC after plugging the power back, power on led steady on, but Bios ...
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1answer
27 views

HDD IO errors, is this definitely a HDD failure or could it be something else? kernel.log

This HDD's history The hard drive is 1.5TB, 6 years old. IIRC it's 7200RPM with a ATA133 interface, using the motherboard's onboard controller. It gave perfect service in a big desktop PC, then 1 ...
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0answers
20 views

Installing an rm750i PSU to an Asus z170 Deluxe motherboard

I have just bought a new PSU from Corsair, the rm750i. I am afraid I might have connected the PSU in a wrong way. The user manual for the PSU is very vague and did not help. So my question here is ...
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3answers
13k views

Why are there so many pins on a SATA power connector?

I was just looking at the power connector for a SATA optical drive and noticed that it had fifteen pins! I then marveled at the data connector next to it, which has a measly seven pins. I know that ...
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0answers
16 views

Removed battery while power on and notebook won't work anymore

I had a problem with my notebook months ago. It froze the screen and I could not power off by clicking on/off button. So I removed battery, put it back in the notebook, and tried to turn it on. The ...
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1answer
3k 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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4answers
8k views

Dead PC - short circuit?

I have a dual-core Athlon PC that is refusing to turn on. I had assumed it was the power supply, so I've just purchased a new one. But after connecting it up I find that nothing has changed. When I ...
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5answers
14k views

How to test a power supply?

My computer powered off the other day on its own, and now when I push the power button, nothing happens. My assumption would naturally be that the power supply is done (possibly well done) but is ...
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2answers
4k views

Computer turns on and off very quickly, then nothing, then works?

The strange nature of this problem is what is stumping me. I built my computer about 7 months ago using all new parts off of Newegg (not a kit or anything). One day, I wake up and turn on my computer....
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5answers
52k views

Computer doesn't turn on, motherboard or CPU?

This morning my computer wouldn't turn on. Pressing the power button has no affect. When I turn off the switch at the back and push the power button after turning it back on it seems for about half a ...
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1answer
31 views

6th gen intel processor compatible PSUs

I'm planing to build a skylake desktop and I was wondering if I have to worry about getting a 6th gen intel processor compatible PSUs. I noticed some PSU advertise that they're "Engineered to support ...
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2answers
3k views

What can I replace a Dell T5500 PSU with?

Is the PSU included with the T5500 ATX compatible? I am looking to make my recently purchased Dell T5500 more quiet. One of the loud annoying noises is coming from a PSU unit. Can I replace this PSU ...
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2answers
347 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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4answers
7k views

Dell laptop power cable always falls out!

I have a Dell Inspiron 1720 laptop, about 18 months old. The problem is that the power cable keeps on falling out. It's just sitting on a desk, but minor movement can cause it to come out. From a ...
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2answers
3k views

Hard disk stop working after some time

OK, this is a problem I am experiencing from the last few days. My PC starts normally, but many times when I work, my HD stops working and the PC get hangs. If I wait for few minutes (5-10 min), then ...
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3answers
766 views

Ram capacity of my computer

2 years ago I bought a Dell Dimension 9200 desktop computer as a high end gaming computer (at least, back then it was a top of the line computer). The computer was ordered with 4GB of RAM, but came in ...
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0answers
20 views

PSU and cooler for AMD FX8320 and ZOTAC GEFORCE GTX 650 amp

Please tell me how much watts PSU do I need to run my pc with the following major components: AMD FX 8320, ZOTAC GEFORCE GTX 650 amp edition 2GB, 2 X 4 GB Corsair Vengeance RAM, 350 GB HDD, (MOBO yet ...
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0answers
32 views

External Battery Packs for gaming laptops/high power laptops

I have a Lenovo Y50-70 and I want to buy an external battery pack to charge it when I'm outside to extend the battery life, I want something like a full day charge (8 to 10 hours on would be fine, I ...
3
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4answers
5k views

Alternative power source for graphics card

I recently purchased an XFX Radeon HD 6870 graphics card for my Dell Server Workstation, but when I brought it home and unpackaged it to put it into my computer, I noticed it required 2 6-pin ...
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2answers
919 views

Laptop PSU died, replacement higher wattage?

I have an old laptop that I need to get a new power supply for, and it seems the only one I can find with the proper connector is 90W, rather than the 65W the original had. Would it be safe to use ...
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0answers
9 views

Can a Liebert.itON BX handle a DeepCool DE-500 PSU?

I am planning to buy a DeepCool DE-500 PSU and my UPS is a Liebert.itON BX. Will my UPS be able to handle the PSU?
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2answers
16 views

*No Signal* and reduced power on custom built PC?

I just built my new PC and a few things have not been working. Here's the components and what I did... Issues: [SOLVED] PC turning on/off every 10 seconds. Solved by changing the voltage on the PSU....
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2answers
3k views

Will a 90 watt (instead of 60 watt) power adapter harm my Inspiron B120?

Will a 90 watt power adapter (instead of the 60 watt adapter it came with) harm my Inspiron B120? It's made by Dell, and it fits…
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4answers
10k views

Dell Inspiron 6400 indicates the wrong power adapter is plugged in and will not charge the battery

I am using the original power adapter with the Dell Inspiron 6400 laptop and now when it boots up I get the following error message. The AC power adapter type cannot be determined. You system will ...
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1answer
22 views

checking desktop power supply voltage range.

I have a few computers. I know some of the power supply is 110-220 and some are only 220. I need to figure out which ones are which. How do I do that? I can't seem to find it in the control panel. Is ...
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2answers
4k views

Dell Dimension 5100, Faulty PSU, replacing it with generic brand

The power button on my Dell Dimension 5100 started flashing yellow a couple of days ago. Upon further investigation I opened the computer and found a AUX PWR led glowing in yellow. I'm taking a chance ...
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2answers
25 views

How do i swap fans?

I have a 2 pin adapter fan that I want to swap to a 3 pin adapter fan. I bought a "3 pin to 2 pin" adapter but when I connect the adapter to the 3 pin fan, the other end doesn't have pins that can ...
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6answers
73k views

Why do some AC adapters and power supplies generate a whining noise, and what can I do about it?

I have many different AC adapters and power supplies for a variety of devices, ranging from small 5V/1A USB chargers to laptop power adapters and desktop PSUs. However, I often hear a whining noise ...
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1answer
83 views

Connecting an ATX power supply to a Hard Drive Enclosure

I have a 4 bay hard drive enclosure made by Sans Digital (one of the TR4M series)... check that, I have 3 such enclosures and the power supply died on 2 of them. I called Sans Digital and asked about ...
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2answers
57 views

Is it safe to use the 5v/2A charger on a device with 1.5A max input [closed]

I have a 8000 MAH rechargeable lantern with power bank, the max input is 1.5A. Based on my recent research, this is what I am concluding, please confirm if my finding 1, 2 are correct. #3 is a ...
6
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3answers
2k views

Can a 20V 4.51A power supply be used with a computer that requires a 19V 3.42A power supply? [duplicate]

I have a laptop that says it needs a 19V 3.42A power supply. I have a Dell 20V 4.51A power supply. Can I use this power supply with my laptop, or will it destroy the machine?
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1answer
26 views

3.3v rail randomly going low after a period of use

I am having a recent problem with my PC. After a "random" amount of 100% stable running time (anything between 1 - 12 hours), the 3.3v rail will suddenly start dropping step-by-step from 3.36v to ...
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0answers
16 views

Motherboard no boot or any fans turning on

Good day everyone! Yesterday, I brought home my motherboard(biostar H81MG) together with the cpu(i5-4440) from my office and tried to make it my gaming mobo and processor. It's like a year old and ...
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1answer
20 views

Power button not working

I put a laptop apart several times and now power button isnt working. I did start the computer by moving the ribbon (that connects power button and motherboard) left and right where it is attached to ...
5
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1answer
917 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), ...
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0answers
44 views

Strange PC behavior: Is my Motherboard or CPU failing?

Yesterday, when I tried to boot my computer (see below for specs), it would start booting for about 1-3 seconds, then shut off for a second or two. It would cycle like this indefinitely until I either ...
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1answer
23 views

Is there a standard for server PSU dimensions?

I don't have a lot of knowledge about server technology, but a simple question which I cannot get an answer for by seraching the internet. Are server PSUs following a norm in their dimensions (length,...
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1answer
31 views

Can I use my 4+4 CPU connector to power my graphics card

Parts: -MSI GeForce GTX 1070 GAMING X 8G -Corsair CS450M My graphics cards needs an extra 6 pin power connector. Can I use the 6 pin CPU connector?
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1answer
43 views

Specifications of power bank for a laptop

I'm not sure about how it suits the forum of electronics here on stackexchange, but I hope I'm at the right place. if not, please forgive and explain. So the case is that I own a high-end laptop (...