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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1answer
22 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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5 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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48 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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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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28 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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23 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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4answers
133 views
+50

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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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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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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36 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 ...
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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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1answer
33 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
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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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
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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2answers
60 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 ...
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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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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
21 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 ...
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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
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
44 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 (...
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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

PC destroyed GPU?

I've been tearing my hair out for the last couple of hours trying to repair my buddy's PC. Quick summary of what happened: A few day ago my buddy told me his PC crashed, and when turning it back on ...
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1answer
45 views

How to troubleshoot power-supply issues?

I have a PC running Windows 7 that sometimes reboots randomly. The Event View-er shows the following Date: 6/26/2016 5:13:51 PM Event ID: 41 Task Category: (63) Level: ...
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27 views

PC crashes randomly on load

So my PC is pretty old(2010) but most parts are new. Only PSU and MB is old. The problem is that when PC is running something extensive like demanding PC game it crashes. But not always... Like when I'...
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1answer
31 views

Faulty Apple MacBook Air Adapter

I have Apple MacBook Air laptop. As the adapter was faulty, I had given it for service. After getting it back, I connected the adapter to the laptop. When I touched the laptop, I felt a shock. I live ...
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36 views

Very Confused HP Compaq 8710p Re: AC Adapters

My 1st Laptop, Please forgive my lack of knowledge. I've spent 4 days off and on trying to learn what I can. More confused than 5 days ago. Info found on the bottom of a HP Compaq 8710p laptop, Input: ...
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1answer
28 views

Triple SLI GTX 680s and a Corsair 860w PSU?

I am planning on running three GTX 680s in SLI mode. Will my 860w Corsair PSU be sufficient to power my GPUs safely? I have read several conflicting accounts on this and would like a clear answer. ...
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16 views

PC won't POST temporarily after power restored to board

Not a particularly catchy title. I have an (unrelated) issue that means I have to kill power to my PC entirely (by switching off the PSU) after shutdown (it turns itself on, I'm not sure why). ...
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1answer
71 views

Motherboard is showing 24v instead of 12v

I have put together a new PC build and when I turn on the machine it's showing me the following error/warning: "Asus anti-surge was triggered to protect system from unstable power supply" Besides ...
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1answer
84 views

Burning smell on power supply

I opened my desktop and leave it until it boot. After few minutes, I logged-in my account and noticed that there is a burning smell on my computer. I immediately turned off my AVR thinking something ...
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51 views

How much can power surge damage hdd?

I have 2 hdds that started slowly dying (low speed, high response times, high activity time, racking up reallocated sector counts) in a period of week. Can it be because of power surge or faulty PSU? ...
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1answer
52 views

Is a PCIe 6 pin to EPS 8 pin adapter reliable?

I am looking at a dual CPU motherboard which requires a 24 pin and two 8 pin power plugs. The power supply I intend to use only has a single EPS 8 pin but it has two PCIe connectors and there are 6 ...
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26 views

ASUS K52J Laptop not turning on, no indicator lights, charger is good, battery is good

I have an ASUS K52J. The charger is good (tested on a second identical laptop). The battery is good (ditto). When the charger is plugged into the laptop, the charging indicator light won't turn on (...
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6 views

How can I tell if my setup allows SATA hotplugging?

I have Asrock Z77 motherboard and Corsair RM750X PSU. I wonder if I could hot-plug my hard drives - for example Seagate ST2000DX001 2TB SSHD drive. Of course, I do know that I would need to unmount it ...
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15 views

HP Laptop not charging when working, doesn't start without battery - Windows 10

I have a HP laptop and yesterday I accidentally hit the laptop on the table. It was fine but when I charged it, it didn't charge at all. When it had 60% remains, the charging indicator showed white- ...
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0answers
102 views

“Memory Size Test Fail” on newly purchased 6900k

I just finished piecing my new build together. I am using the same PSU (Corsair 850i), video card, and SSD as my previous build, which was working without any issues. After I started a game up (any ...
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1answer
43 views

Lowering APU Voltage increases performance?

I have an AMD APU (A6-4400M) and sometimes performance decreases when TurboCore increases Voltage/Clock speed. I use AMD Overdrive to manage Voltage and CPU Speed cause my fan gets crazy when reaching ...
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1answer
40 views

Laptop Power Supply Modification

I have an old laptop which I no longer have the charger for. I ordered a new charger for the same laptop series, but the plug is too large, and it is unlikely that I will find the same adapter (Acer ...
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1answer
37 views

Should i use an old PSU for my new PC?

I have an old Antec Quattro 850w power supply which already has 6 years. I used the PC that this PSU was installed like 2/3 hours every day for 6 years, mainly for gaming. I have a tight budget for ...
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1answer
64 views

Can I Power A SSD From A USB Instead OF A PSU

Hypothetically speaking, let's say my PSU (Power Supply Unit) didn't have enough ports to add another SSD/HDD. Could I power my SSD/HDD via USB? Would it work? Would it still be efficient/would it ...
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1answer
32 views

Use TDP to size power supply wattage?

I'm running an A1SRi-2758F motherboard with an Octacore Intel Avoton CPU. The CPU is advertised as 20W TDP (Thermal Design Power.) Is my assumption correct that when the CPU generates 20W TDP, it the ...
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1answer
108 views

My new motherboard Asus Z10PE-D16 WS doesn't start

I have purchased the following components : Asus Z10PE-D16 WS 2 CPU : Intel Xeon E5-2658 v3 2 Fans : Noctua NH-U12S Power Supply : EVGA SuperNOVA 1300W GOLD Ram : Kingston KVR21R15D4K4/64 RAM 64Go ...
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2answers
35 views

Did I damage any components?

Background I'm new to assembling my own computer and I hit a snag. I mounted my motherboard (without the CPU installed) onto my case and attached the PSU cables onto it. I figured I can test out the ...
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1answer
49 views

Computer automatically shutdown shortly after power on

My old computer used to work fine. After I upgrade the monitor and connect it to the computer via HDMI cable, my computer always automatically shutdown soon after it's powered on. From what ...
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1answer
45 views

Monitor with different power supply

I want to power a monitor using a 12V car battery. My monitor uses 19V and 1,5A of power and it includes an AC power supply. However, I don't want to transform my 12V into 110 or 220V and then let ...
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1answer
25 views

Can I use this power supply with my motherboard

So this is my first post so I apologize in advance if this is either a dumb question or a novice one. I am trying to figure out some things about my power supply. I have purchased this power supply ...
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0answers
26 views

High pitched noise from WQHD Curved monitor

I am very sensitive to high-pitched noises. Some years ago I even got diagnosed with "Hyperacusis" - which is essentially an high sensitivity to noises. I am an electronics engineer and often need to ...