Tagged Questions

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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1answer
8 views

Using ATX 24-pin PSU (Corsair VS450) on 945GCM3 (24-pin + 4-pin Motherboard)

I have a PC with Jetway 945GCM3 motherboard, Intel E4500 Processor, 3GB RAM and ATI HD4670 Graphics Card. The PSU suddenly started giving troubles and I decided to replace the PSU. The older PSU had a ...
2
votes
1answer
31 views

How do I deal with too few internal PCIe power connectors for a GPU?

I have an HP Z820 workstation and currently I have an Nvidia Quadro 600 (for display) and a GFX Titan (for CUDA computing) installed. The Titan takes up all the available internal PCI-Express ...
1
vote
1answer
28 views

Connect 5 external harddisks to a single usb port

I want to connect 5 external hardisks to single USB port. I think that can be done by giving some sort of powersource to individual external HDs. How much voltage should I provide to individual ...
1
vote
3answers
33 views

Safe to charge USB devices while doing other power-consuming tasks?

I just recently got an iPod, and I completely forgot that without an adapter you have to hook it up to your computer by USB port to charge it, sync, etc. I currently have it plugged into the front USB ...
43
votes
4answers
4k 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 ...
5
votes
2answers
441 views

AC not working properly

Yesterday evening i used my laptop without any issue, this morning i went to work and i have noticed that the AC charger is not working properly. This is the behavior: If i connect the laptop to ...
-3
votes
1answer
27 views

I closed my laptop and when I opened it the screen won't turn on at all but fans are spinning hard [closed]

Well I have a hp Pavilion 15 notebook pc that originally came with Windows 8, however I didn't really like it but was sluggish at times, then it had a problem where it would show "preparing automatic ...
1
vote
0answers
33 views

HP laptop doesn't power up

I am kindly asking for your help. I have an HP DV7T-6C00 laptop which doesn't power up at all. I have read various forum threads and they did not solve my problem that's why I'm opening a new one. It ...
2
votes
2answers
33 views

Can a 20V, 4.5A travel adapter replace a 19V, 3.42A charger on ThinkPad T440 Lenovo?

I have a ThinkPad T440 that came with the new adapter plug "slim-fit". The original charger is 19V, 3.42A. I ordered a replacement AC for travel, and Lenovo sent to me a charger that is 20V, 4.5A, ...
0
votes
0answers
18 views

dell venue 11 pro charger power requirements [closed]

i sourced a 5 port usb charger from anker (40 watt 5V/8 amp) to use on my dell venue 11 pro. the dell charger has the following info....24 watt and 19.5 volts at 1.2 amp or 5 volt at 2.0 amps. why ...
1
vote
1answer
24 views

Motherboard has power, but doesn't light up anymore

My rig gets power and the SATA connectors work, heatsink fan, USB, etc. CPU is dead but is it safe to get a new one to test without thermal basting? I ask because I don't want to kill another CPU but ...
1
vote
0answers
29 views

GPU drivers crashing VLC or games - CPU or PSU fault?

For a long time I've been experiencing the "Display driver nvlddmkm stopped responding and has successfully recovered." errors. I tried everything that is possible, to no avail. Today, I monitored ...
0
votes
1answer
31 views

How do I know if my PSU is dead or if my PC won't turn on because of something else?

The other day, my PC shut off in the middle of using it and will not turn back on. I think it could be my PSU because it is exhibiting some of the same behaviors of what I've seen on the negative ...
1
vote
0answers
43 views

Faulty PSU - What needs to be replaced?

I was using my computer a couple of days ago, and out of nowhere, it instantly turned off. The computer was emitting a burning smell and would not power back on. After some researching I found that ...
0
votes
1answer
48 views

PSU has 2 PCI-e cables, and I don't know how to use their endings or if I need to use ONLY one cable

I've started to assemble my new PC and when I've finally attached my Gygabyte NVIDIA GPU (GTX 760), it needs some kind of PSU power, in the form of 6 + 8 holed socket. So far so good. My PSU (Cooler ...
0
votes
0answers
58 views

Is my power supply big enough? [closed]

My computer has been crashing lately and I am wondering if it is because of my power supply. Here is what is in my computer Internal Motherboard - ASUSTeK Computer INC. P8Z68-V GEN3 CPU - 3.50 ...
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votes
0answers
16 views

HP laptop boot on 2 or more trials [closed]

I have a Compaq(HP) laptop. I connect it directly to the main power source without the battery, since my battery does not hold charge. I notice that on switching on the power button, the laptop starts ...
4
votes
3answers
349 views

Danger/risks of switching off the power of a connected USB drive?

I have 2 external USB hard drives which are always connected to my laptop. The reasons are mixed; I need them so often and I'm too lazy to plug/unplug them again and again. However I'm concerned ...
0
votes
1answer
21 views

Motherboard Running on Li-Po Batteries Rebooting Randomly

 I am using a MSI Z87I AC motherboard with an Intel Core i7 4770T (2.5Ghz 8MB 4C 8T) processor, 2GB of DDR3 RAM and a 32GB SSD. This setup is used on my autonomous underwater vehicle. The power ...
0
votes
1answer
103 views

System Crash with graphics

I have two Nvidia GeForce GTX 660 cards (one MSI and one gigabyte) and they both have 2 GB onboard RAM. To go with this I have an Intel core i5 3550 (@3.30GHz). Also, I am running Win 7 64 with 32 ...
0
votes
0answers
19 views

ATX Standard for Wake-On-LAN

I've read about the implementation of the "Wake-on-LAN" feature on Wikipedia. The article claims that at least an ATX 2.01 standard-compliant PSU is necessary. Quite alot of other resources on the ...
1
vote
2answers
61 views

Accidentally got a little bit of water in uninterruptible power supply outlet; just let it dry, or trash it?

So, I had some water in my home office, I know that wasn't very responsible, but let's not point any fingers here. Long story short, a bit of water ended up spritzed onto some of the actual plugs of ...
0
votes
0answers
47 views

What controls the RAM voltage value?

Quite simply, is the RAM module responsible for generating its own operating voltage or does it just run at whatever voltage the motherboard is providing? I am imagining that it could either ...
0
votes
1answer
25 views

PSU starts and stops immediately. Need Help.. IS it faulty?

Yesterday when I switched on the PC it started and stopped immediately. I tried everything that I could. For PSU I jump started it by paper clip test. When I switched on the PSU, the fan started ...
0
votes
0answers
27 views

PC shutdown suddently. Power LED blinks and PSU fan is on

I'm having a problem with a new computer with MSI motherboard and AMD APU processor (I don't remember the details). When I start some "heavy work" (like a maps generator made with Python, or a batch ...
0
votes
0answers
18 views

Two separate motherboards exhibiting different issues with same CPU

Recently one of my home build computers that the family uses shut down unexpectedly. I tried to reboot it several times, with the first couple it attempted to boot Windows, and the last few it ...
0
votes
4answers
91 views

Is it necessary to use UPS? [duplicate]

I'm current using Corsair VS 550 (550 watt) power supply unit ,but i don't have any UPS. Is there any chance that my power supply unit and hard disk could be damaged for not using any UPS.can anyone ...
0
votes
0answers
22 views

Power surges after installing graphics card

Power surges happen a few times a day (I think this is already an alarming rate) when I play games, say The Sims 4. When I play, the computer just reboots then my ASUS Motherboard tells me that it has ...
0
votes
2answers
50 views

New computer won't boot at all

I have just bought a brand new computer in parts. I assembled it and tried it, but it is not booting. Parts: Intel Core i5-4590 2 x 4GB of Kingston HyperX Genesis RAM Gigabyte Z87-DS3H Asus nVidia ...
3
votes
1answer
125 views

Custom built PC shuts down ONLY after a game starts. What's wrong with my PC?

Whenever I boot up a game that is directx dependent, my PC loses power and reboots automatically. No intermediate warning of a reboot/restart, either. I have played non directx based games fine, such ...
0
votes
1answer
25 views

Can I use my iPad charger to power speakers rated 1.2W? [closed]

They are USB-powered but I want to play music from my ipad which can't supply them with power so I need a power supply. I was wondering if I could simply use the iPad charger to power the speakers. On ...
2
votes
0answers
76 views

Is it possible to combine fanless, flex-form and a power output more than 300 Watt in a ATX PSU? [closed]

For the construction of an embedded System I look for a fanless ATX Power Supply that is build in flex form-factor and has a power output more than 300 Watt. On the Internet I found a few power ...
1
vote
0answers
36 views

Should you worry about high voltage and wattage on a non-overclocked computer?

I've been wondering if I should be worried at all about high wattage or voltage on a non-overclocked computer. I say non-overclocked because when I Google search this question or something similar it ...
1
vote
0answers
13 views

Cursor hangs for a second when turning off sound system from the powerstrip

I have a curios hardware issue that I'm worried about. I have my desktop plugged into a regular power strip without surge protection or on/off switches. In one of its plugs there's another power strip ...
0
votes
1answer
34 views

What are the consequences of using a smaller power brick on a laptop? [duplicate]

I have found many similar questions, but no one fully satisfying. Please correct me if wrong, but from what I understand the Voltage of the power supply should match closely the specs, while the ...
11
votes
4answers
560 views

PC shutting down after 30 minutes, even when on BIOS screen

I have a desktop PC that is just over a year old that I use daily for work. It's running Windows 8.1, has 16GB RAM and an i7 CPU. It has a 256GB Samsung 840 SSD (Windows + programs) along with a 1TB ...
0
votes
2answers
63 views

Is my GPU or PSU going out?

So, the screen started showing artifacts and then suddenly went out but the sound was still working. Thinking it was just the game I was playing, I tried to ctrl+alt+del, esc, and alt+f4 out of it but ...
1
vote
0answers
36 views

Usb ports connecting and disconnecting

I know this is not the place to ask about hardware problems and solutions, but I can't search on google anymore... I've been for over 24hours searching on google about my problem and trying to get a ...
0
votes
0answers
16 views

Low voltage fluctuations [duplicate]

recently there have been electricity fluctuations in my house (which is "expected" to be solved soon . It's a problem in a sub-station) . To give you an idea , the lights in my house goes pretty dim ...
0
votes
0answers
22 views

Power Supply vendors/part numbers for Promise NS4300N?

Good morning all! My problem is relatively simple: I have 2 Promise NS4300Ns, both have dead power supplies. Disassembling a 3rd yielded a Mini-ITX format power supply with a proprietary power cable. ...
1
vote
0answers
57 views

Laptop with loose or failed DC jack, burnt but still functional motherboard [closed]

I have an ASUS G74SX laptop. Over time the DC jack deteriorated, probably by coming loose. The laptop would not charge unless I oriented the power cable in a particular way. Eventually, it started to ...
-1
votes
2answers
42 views

What do OUTPUT charts of PC Power Supplies mean?

I'm looking at various power supplies and they all come with different output cables. They also have different OUTPUT charts, for example: What I'm wondering: What are these output columns are ...
0
votes
1answer
28 views

Computer quickly deactivates after turning on with boot on power in BIOS setting

Computer specs: Lenovo X220i Tablet running Windows 7 64 bit (I doubt knowing the OS will help, but just in case) In the BIOS I have enabled the setting 'power on when AC attached' so the computer ...
1
vote
2answers
35 views

UPS for PC for repeat power cycling

I am assembling a mobile test stand at work, which will be wheeled around from site-to-site within my building. It will contain data acquisition equipment, as well as a PC running software to handle ...
1
vote
1answer
47 views

What purpose has this tiny clip on my power cable?

With the Asus N550J I bought, I received an adapter which has a tiny clip attached to it: As it seems, the exact same cable fits perfectly in that clip, as shown below: On this page some usages ...
0
votes
0answers
41 views

Using netbook motherboard in PC build, need way to press power button from 7-8 inches away

I'm using the case out of an early Sega Genesis/Megadrive to build a low power emulation/media PC. The following picture is an aerial view. The power button is on the top right, but underneath the ...
0
votes
0answers
40 views

Reason for computer not booting when power button pressed

I have a following problem starting my desktop computer and I'm trying to figure out the root cause. Most of the time it will just start normally when I press the power button. On some occasions ...
0
votes
1answer
62 views

Can a complete blackout damage a computer?

just last night a blackout occurred while I was watching a video on the web. I've got my monitor and desktop computer plugged into an extension cord and then into a power strip/surge protector. Both ...
0
votes
1answer
77 views

Battery 100% still charging

I have a Acer AspireV3-772G running Windowws 8.1. My battery indicator shows 100% available ( plugged in,charging) status. I calibrated the battery but no difference. Also I have bought a new battery, ...
5
votes
1answer
114 views

Will using 2x2GB ram use more power than 1x4GB ram?

I've recently upgraded my ASUS K45VD laptop from 2GB memory to 4GB memory by adding a 2GB stick. Then I got problems 2 times. The first time, asus's service said that the mainboard is down and they ...