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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Witcher 3 causes PC to restart randomly

(Not sure if I am asking at the right site, as it might be software/hardware related and not exactly gaming. I guess I'll post this question on Arqade too.) I have been having this problem since 2 ...
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1answer
14 views

Can a UK power cable be used with a US laptop power adapter?

I have a US MSI GE62 Apache -002 laptop, its power adapter is rated at: Input: 100-240V ~ 2.7A 50-60Hz Output: 19.5V - 7.7A Can I use it in the UK with a UK power cable?
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1answer
178 views

My new motherboard doesn't start

I've purchased the following components for a new machine: Asus Z9PR-D12, Be Quiet! E9-580W 80+ Gold, Intel Xeon E5-2620 2.1 GHz, Crucial 16 GB DDR3 1333 MHz CL9 ECC Registered. I assembled the ...
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0answers
10 views

Computer stalling out during gaming and randomly restarting - I think its the power supply. New power supply's don't work?

ISSUE: I think my issue has multiple issues. 1 leads to 2 leads to 3... I think anyway. Are they related? That may be enough to answer my question. Issue 1 is what I attempted to answer, but the ...
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1answer
37 views

PC won't turn on

My new PC broke down completely yesterday. This was my first ever PC build, I installed the components myself, but I couldn't figure out the wiring/cables so I went off to a tech-guy for help. He put ...
0
votes
1answer
20 views

How to lessen performance impact on Dell laptop with defective power system?

A few months ago, I replaced a broken cord for my Dell Inpsiron 15 laptop. The replacement cord (a slightly different model from the factory cord) worked perfectly until a week ago, when I started ...
0
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2answers
6k 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 ...
2
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1answer
24 views

Surge Protecter's Grounded Light Turning Off

I've got a new PC setup in a new apartment (built before 1980s), however the surge protector I have is doing some funny things. Any help would be appreciated. When I plug the surge protector into a ...
0
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3answers
770 views

My Toshiba Satellite c850 won't display screen

Before this happened, I had some occurrences where my laptop's screen turned off out of no reason. Everything was still on (the sound, tasks in thr computer, fan, etc. was working). I tried closing ...
0
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1answer
52 views

Is keeping a laptop connected to power supply harmful for its battery? [duplicate]

I heard that charging a Li-Ion battery all the time is practically harmful for the battery and significantly reduces its useful capacity over time. Is this true? Should I disconnect the power cord ...
0
votes
1answer
20 views

Is it ok to use a Haswell CPU with old power supply?

I will buy a i7 4790k, and I want to know if I might encountered any problem using it with a old 250W power supply. I'm planing to get a new power supply also, but only when a I got my video card. ...
0
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0answers
28 views

External monitor flashes occassionally only while power cord is plugged-in

I have a Thinkpad laptop (E550 to be exact) with an i5 CPU and Intel HD 5500 GPU running with Win 7. Since two weeks, while an external monitor is connected (to the VGA port) AND the power cord is ...
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votes
3answers
42k views

How do you check how much power a USB port can deliver?

Some laptops have a special USB port that can deliver more power than the other ones. However it is not always easy to identify which one is the good one, nor how much power it can deliver. So is ...
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2answers
120 views

Is it possible to apply a time frame to Windows 7 power settings?

The problem: I want my desktop computer to use the High Performance power mode whenever I'm at work, to minimize UI lag, etc. When I'm not at work, I want to enable Power Saver mode. I'd like to do ...
0
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2answers
72 views

Why are my drives failling (version 2)?

I have a problem similar to the one described on question Why are my hard drives failing?. I have a PC assembled by my self and It has worked fine for 3 years but recently It have been killing hard ...
0
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0answers
27 views

Computer power supply fault

This is my first post to the site; it's been a great resource to me in both my professional and personal lives. It's about time I registered! So I went to boot up my desktop this morning and nothing ...
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 ...
0
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0answers
23 views

Inspiron powers down at random

I have a Dell Inspiron 5348 that shuts down at random as if the plug is pulled. I ran the diagnostics and no fault was found. I have tried various power outlets in the building but that doesn't ...
0
votes
1answer
26 views

Overloaded UPS, might it have damaged connected hardware?

I have an APC Back-UPS ES 400, and during a brief power failure (less than a minute), its buzzer sounded continuously. Looking up the manual, this apparently indicates an overload. It's rated to 240W, ...
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4answers
7k views

How can I cool down a laptop power supply?

Yes, that's right. A laptop power supply. This afternoon I was playing Minecraft on my ASUS laptop. As many Minecraft players know the game is written in Java which, on high settings, can force quite ...
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0answers
18 views

PC Won't Sustain Power

I've been using this system almost every day for the past 7 months. It has worked completely fine with no indication of error at all, but now it will not power on. Whether I use the casr button, the ...
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3answers
5k views

Computer suddenly shut down - won't start again

Last night my computer seemingly broke down completely. I wasnt looking at it when it happened, but I could hear the entire thing shut down. It was only idling in desktop at the time... Afterwards I ...
0
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0answers
4 views

HP Prolian BL460C power supply converter

I have 3 HP Prolian BL460C servers, but I don't have chassis for them. Is there any kind of power adapter that I can use for, so I can just use normal power cable to plugin? It's not for production, ...
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0answers
7 views

Pl4201 Power Line Overheating

My laptop is getting overheating pl4201 IC then getting thermal shutdown and restart with 7 beeps error in dell Inspiron. I have google but can find proper answer. Tech expert in my city tell me ...
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votes
2answers
36 views

Toshiba laptop power light turns off when power button is pressed and the computer doesnt power on

I have a toshiba C655 laptop, As soon as I plug in the adapter the laptop power light turns on with or without the battery, but when I click the power button the power light goes off and nothing ...
1
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1answer
58 views

I'm in the US and computer only works when power supply is in 230V position. How do I diagnose this?

So, I replaced a computer PSU about six months ago. And, the computer power down intermittently. I've found: it's not over heating. Monitor shows it running cool. it's not graphics related. ...
0
votes
1answer
48 views

Computer Don't start - Changed MOBO , PSU , VGA , RAM

I have an ASUS P5W DH DELUXE with Core 2 Duo E6400 and 1GB x 4 ADATA RAM The computer failed to start and started troubleshooting. I changed the PSU (bought 3 of them) [1x450Watt , 1x500Watt , ...
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1answer
25 views

Squealing coming from laptop power supply? [duplicate]

I have an HP Pavilion dv7-6135dx. This morning, the power supply/AC adapter started making squealing noises for a few seconds at a time. I had it plugged in during a storm that happened while I was ...
2
votes
2answers
3k 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 ...
2
votes
1answer
68 views

Brand new computer fails to boot, powers on and off immediately, despite running fine while installing OS

I've exhausted Google search in attempt to solve my issue, and I'm fairly confident there's no single solution but I'd like to get some brand new ideas. The specs: ASUS X99 Sabertooth 8x8GB G.Skill ...
0
votes
0answers
23 views

I disconnected my PC for a clean up, and now the screen is not working

I disconnected my PC for a clean up, and also to change The DVD reader. I trusted myself that i would remember how to connect everything to the motherboard again, but, something is not working well: ...
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0answers
21 views

Computer making various noises and sometimes runs slowly

My computer has been making some very strange noises for several months now. The first noise it made was when I installed Speed Fan and after the second time of running the program, my computer made a ...
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 ...
5
votes
5answers
19k 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 ...
0
votes
3answers
2k views

Sudden PC Power Loss - New Computer

I just recently (last week) built a new PC. Upon initial assembly, I had issues getting it to power up. When I turned on the power supply nothing seemed to happen. I tried disconnecting and ...
0
votes
0answers
33 views

Computer not properly waking from sleep, doesn't boot correectly

I have windows 7. Recently, when I put my computer to sleep and turn it back on, the computer powers on but I have no video output and my mouse and keyboard aren't lighting up. Also, when I turn my ...
2
votes
2answers
95 views

Computer crashing about 20sec into booting (even in BIOS). CPU or Motherboard?

EDIT: we seem to have narrowed the problem to CPU or Motherboard. Is there any way I can identify the cause between these 2 without a spare part to test? I was playing Minecraft for the first time on ...
0
votes
1answer
4k 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 ...
0
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0answers
28 views

PC doesn't boot most of the time

PC is now dismantled down to: motherboard (Asus Z97AR) CPU (Core i7) PSU (750W) Motherboard and CPU are new, PSU is old. If you continuously turn the power on, then of, then on again, ...
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2answers
71 views

Can my PC handle a Nividia GTX 750 Ti? [closed]

I am willing to update my graphics card to Nividia GTX 750 Ti but I am confused about the power supply and the motherboard if they can support it or not. Motherboard System Manufacture: Gigabyte ...
1
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5answers
2k views

Does the computer really shut down after I shut it down?

After I pressed Start >> Shut Down >> U, the computer goes off. But hass the power supply still got energy? When I use my old power supply, after I shut down the computer, the light of my mouse is ...
8
votes
6answers
23k views

How can I diagnose a faulty power supply?

I've got an older PC that freezes/blue-screens at non-reproducible times. I suspect that it's caused by a faulty power supply, mainly because I don't have any other idea. How can I diagnose this ...
1
vote
0answers
35 views

Computer randomly loses signal to monitor

Around a month ago I build my first computer, and I've had no problems until now. For about a week my computer has lost signal to the monitor, is only able to be turned off from the PSU. (The fans ...
2
votes
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
votes
2answers
98 views

Monitor, keyboard, mouse not receiving power, computer takes 4 attempts to power up

I have a computer with specs listed below. This morning I turned off the computer to install a pair of USB speakers (Logitech Z5). Afterwards, I turned on the computer, it would power up, but then ...
14
votes
6answers
3k 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 ...
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0answers
40 views

Power supply needed? can I use the same size because old one is near end of life or do I need a larger one [closed]

Symptoms, my computer when it gets going the power will just cut, the power indicator stays lit but everything else dies, all the fans, the screens go dead it does not respond on the network (ssh ...
0
votes
1answer
25 views

System keeps changing power mode while gaming

Recently my laptop keeps changing power mode while gaming, like if i disconnected the charger physically. I don't have another charger to test, this is the stock one which has been running fine for 3 ...
0
votes
0answers
43 views

PSU fan (power supply fan) not spinning. But computer works

The PSU fan on my computer is not spinning at all. I've now run a high def video for 20 mins and it's still not spinning at all. I read there's power saving features that will power down the fan, but ...
0
votes
1answer
28 views

Screen pitch black after random shudown, Gpu's fans full speed.

This morning I went to power up my pc and BAM. My screen is pitch black. Noticed that Gpu's fans were at full speed. Switched to my moba gpu and well, it works fine. I cant understand if it's a GPU ...