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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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 ...
3
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2answers
10k views

PC power supply & normal range for voltages reported in BIOS hardware monitor?

I'm trying to diagnose whether my computer has an ample power supply. Sometimes when I play a video-intensive game, both monitors lose the video signal, even though the computer remains on and sound ...
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0answers
15 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 ...
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0answers
15 views

Video card power up delayed

When I start my computer, it takes approx. 20 seconds before the video card powers up. Before that it's just quiet (no fan noise), and my monitor gets no signal. The computer starts fine otherwise, ...
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3answers
5k 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; ...
3
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1answer
417 views

What can I do when my UPS overloads?

I've got a sweex 650VA and the following hardware: i7 3770k 32 GB Ram z77 Extreme 4 MSI nVidia GTX 980 2 HDD 5.25 3 SSD 1 DVD RW All supported by a 700 W power unit. When I use particularly ...
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1answer
38 views

What does the 4+4 CPU power connector on my motherboard do exactly? [duplicate]

I just built my very first PC from scratch. Before that, I always bought pre-made PCs. One thing I noticed while putting all the parts together, was that aside from the standard 24 pin connector, ...
2
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3answers
46 views

Confirmation that motherboard is dead

all My computer died yesterday. At first I thought it was the PSU, because it never started, but I tested the PSU with the clip trick and it starts, and I have another PSU that works (for sure), and ...
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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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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 ...
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2answers
52 views

USB 3.0 port as 20v power supply [closed]

I'm looking for a way to get the stated 20V 5A out of an USB 3.0 port to power an amplifier. Found power supplies but no easy USB 3.0 cable to DC power jack/connector (20V). Does it exist either or ...
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0answers
28 views

Battery Stops Charging Randomly

I have a Lenovo E540 running Windows 10 x64. For quite a while now, I've been having problems with how the battery charges. When I plug it in, it will always start charging - maybe for only 30 ...
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7answers
40k views

If my power supply is 700w, do I need a 700w UPS?

if my power supply is 700w, do I need a 700w UPS? I am running dual 20" dell LCD's, a i7 quad core system with a radion 4870 1gb video card, 2 hard drives.
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2answers
2k views

What happens when laptops reach 100% charge?

I have been reading alot of mixed views on how Lithium Ion batteries work when it comes to laptops. I have the new dell xps 15, with an intel i7 cpu, 16gb ram, and a 512gb ssd. Is it bad for the ...
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1answer
622 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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1answer
74 views

What could cause a GPU upgrade to result in a 50% performance loss?

Background (The Why?) I'm using AMD Graphics Cards for distributed GPU computing. BOINC, Folding-at-Home, and similar. The Problem I've replaced my old card, an R7 260x, with a much more powerful ...
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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
16k views

Does the fan go on the bottom or top of the power supply?

Which direction should I install the corsair tx 750 psu? Should the fan go on the bottom or top? It seems the fan should be on the bottom of the case correct? Update I have a antec P183 case, so ...
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0answers
28 views

Laptop charger voltage fluctuation

I had sent my laptop(Dell inspiron 5520) for repair as it wasn't getting charged at all. The battery was working fine though. The technicians at the service centre told me that the voltage ...
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0answers
19 views

I just installed a new graphics card in my computer, now it boots for a minute or two, then it shuts off

I installed a PNY XLR8 NVIDIA 750Ti OC into my system. Soon after installtion, the computer boots for a minute or two, then it dies. I suspected my power supply, as it was 5 years old, so i bought a ...
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2answers
59 views

Brand new laptop making an electrical sizzling noise when opening programs

I just bought the Acer V17 Nitro VN7-792G-705X. The processor is the Intel i7-6700HQ. I noticed that when I open a program, say google chrome, you can distinctly hear a sizzling noise coming from ...
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0answers
29 views

Computer doesn't start unless case is opened

The power button just does nothing. The cord is fine, the outlet is fine, the power switch is on. Literally the only thing that fixes it is to: open the case pull the power supply out (without ...
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4answers
2k views

Two PSU in one PC

I'm not sure if this is right question for this site, so I apologize if I shouldn't have asked this here. I have two 400W (labels say that they are 400W, but I think they are much less because they ...
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1answer
96 views

Nvidia Gtx 960 blackscreen and loud noise, code 43:windows has stopped this device because it has reported prob

Nvidia gtx690 blackscreen and loud noise(sometimes). code 43:windows has stopped this device because it has reported problem. Currently i am using windows 10. I tried many methods. Including unplug ...
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1answer
118 views

Computer hangs at POST, sometimes

I had an issue where sometimes the computer would hang at startup, during POST, with either a code 67 or 99 on the motherboard's debug LED (Asrock Z77 extreme4). If it was the former (code 67), the ...
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2answers
5k views

Workaround for Dell “Power supply not recognised” issue

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 ...
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0answers
29 views

Accidentally connected 12v psu to 5v HDMI composite/svideo composite adapter

I accidentally connected a 12v psu to a composite/svideo - HDMI converter adapter that was expecting 5v (after a customer service rep. apparently erroneously claimed the device could handle up to ...
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2answers
32 views

New motherboard sends no signal to monitor

I have set up a new motherboard on an old chassis of a desktop PC. The mb has its own embedded GPU, and I haven't added any additional graphic card. I have connected the mb to the PSU through the ...
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1answer
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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1answer
32 views

Lenovo laptop, Windows 10 not charging battery

I have a Lenovo G500s. It came with Windows 8.1 pre-installed with the battery working fine. I've installed Windows 10 on the laptop now and suddenly the battery is not recognized anymore. It says "0% ...
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3answers
12k views

Does a laptop computer charge faster when off?

A laptop power supply can supply a limited amount of power. Conceivably, then, when the computer is running, some of the power must be diverted to the processor and other components, leaving less to ...
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40 views

How can I repair a power supply for a Apple's Power Mac G4?

This is an attempt to gather a reference page for anyone trying to replace a failing PSU from a Power Mac G4 with an equivalent ATX in the future. There are still a couple of pages -luckily- ...
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13 views

Power supply rate for Riger ADSL Modem 2/2+ DB102

Does anyone know what type of power adapter for this kind of modem?
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2answers
40 views

Windows-7 Acer Aspire 5738 laptop simply turns off

My laptop simply switches off on its own...and I mean switch off without warning or anything...as if someone cut the power supply so the computer did not show any warning etc. And this happens only ...
3
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1answer
904 views

Cause of desktop computer AC plug melting?

We discovered the family desktop computer's 110V AC cord to be swollen and hard to unplug from the PC. Both the plug and the receptacle are partially melted on what I think is the "hot" side (rather ...
1
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1answer
1k views

Inadequate Power Supply - Can I upgrade Video Card on Dell XPS 8300 to assist Video Editing? [closed]

I have a Dell XPS 8300 with i7-2600 and 16GB RAM. It has a Radeon 6450. It also has an amazing (as in, incredible) 125 Watt power supply. Somehow, it runs. Recently, I wanted to work with video from ...
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2answers
2k views

Dell Inspiron 530 (desktop) PSU compatibility

I have an Inspiron 530 with a stock PSU. I need to upgrade it to meet my video card's needs (AMD HD6770), which demands at least 450W, to potentially fix BSODs with the latest version of the drivers ...
0
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1answer
2k views

Switching power supply from 115V to 230V and back again allows PC to boot--why?

I support a refurbished Dell Dimension 3000 PC (c. 2004) which occasionally will not boot: no POST or video signal, but the fans will begin blowing and an LED on the mainboard lights up. I believe the ...
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1answer
1k views

Upgrading video adapter for Dell Vostro 220s to Geforce 7800 or Radeon 1800? [closed]

First, I'm a software guy, not a hardware guy. I'm not afraid of hardware, but I don't stay current on the technology. You can probably assume that I know the basics (I know the difference between ...
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0answers
141 views

Dell XPS 1330 / 1530 - Won't turn without power lead, but you can remove power lead once turned on?

As the subject states, I can't turn on my dell xps 1330 without the power lead in. There is nothing from pressing the button. It has a newish fully charged battery and have tried a couple of good ...
2
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2answers
4k 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 ...
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1answer
27 views

Can I safely put a PCI-E 6+2 cable into a 12v4 slot on Enermax 1000W PSU?

I have an Enermax Revolution87+ 1000W PSU. It came with a total of 6 PCI-E 6+2 cables. (and some other cables, but that's the one I need information about) The red 12v4 slot, which appears to be ...
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1answer
37 views

How to test graphics cards without a compatible PSU? [closed]

I've recently been given five Nvidia Quadro 4000 graphics cards. However, I am uncertain wether they are in proper working condition. 3 are labeled as "defect", but I suspect this could be an easy ...
0
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1answer
504 views

WD external hard drive turns off

I've got an external hard drive (WD500BMVU) that was dropped and now does not mount anymore if I connect it to my Laptop (Mac). When I connect it with the USB cable, the LED light goes on, I hear the ...
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2answers
5k 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 ...
1
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1answer
29 views

What PSU can power a server board with only 2x 6-pin connectors? [closed]

Looking at half-width server motherboards for home-use, I noticed the Intel S2600JF doesn't have a 20-pin or 24-pin connector. Instead, it has 2x 6-pin connectors; see the lower right of the board, in ...
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1answer
41 views

is it safe to power off SATA HDD?

I have an internal SATA Harddrive connected to USB through simple SATA to USB cable: ...
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1answer
30 views

Need some explanation about PC and AVR (Automatic Voltage Regulator) [closed]

I have an AVR and my PC plugged into. I Live in Europe and the voltage in the mains is +-240V. The AVR has a LCD display showing the current input (mains) is 237 and the output voltage 210-217V. My ...
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1answer
419 views

Why does my Samsung laptop computer think it is unplugged?

Samsung laptop, purchased new in 2012. Windows 7 64-bit. 8GB RAM. Model NP300V5A. I woke up one morning and woke the laptop. I had left it plugged in to the wall the night before. When it woke, it ...
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1answer
52 views

Is it safe to plug in a computer to a surge protector or a outlet? [closed]

I noticed that my old psu connector cable blew up beacuse of unplugging it correctly like pulling the connector off it was just the rubber peelling off and other rubbers with metal inside with ...