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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Graphics card fans very loud, no video/unable to boot

So let's back up a few months. I came back from work one day to find my computer on (I remote desktop to it occasionally) but my graphics card (Gigabyte GTX 770 OC-2GB version) fans running very ...
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1answer
28 views

Laptop Turning On and Off

Just for a heads up, I am not computer hardware savvy, but I do have a basic understanding of parts and what they do. I have not replaced any parts other than the hard drive but that was before the ...
0
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0answers
15 views

splitting 6 pin PCI-E cables

I am trying to add a second graphics card to a workstation. The machine already has a GTX970, and i have a spare GTX550Ti and GTX275 floating around. The 275 requires 2 PCI-E 6 pin connectors, the 550 ...
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1answer
38 views

Is it safe to use a higher supply voltage to a peripheral?

I have an ~10-year-old hub (Surecom EtherPerfect 505ST if anyone's interested) that says "DC 7.5V" below its power connector. Unfortunately, I can't find the adapter, but I do find one that fits but ...
3
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1answer
56 views

is it true that UPSs act as bottleneck for computers' PSU?

Once one told me that having a low-wattage UPS would make useless my PC's trillion-watts bad-ass PSU. Is this true? Is this true even for normal plugged usage?
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1answer
34 views

What can go wrong when connecting a PSU? [closed]

It will be my first time connecting a PSU. Could someone provide me a good tutorial of how to connect a modular PSU? Also, what's the worse that can happen if I connect something wrong? Can my PSU get ...
17
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2answers
1k views

What kind of power port is this?

I'm planning on getting a new PSU and I was shopping online when I saw this thing. What kind of port is this? I've never seen it before, and I definitely can't find cables for this. For reference, ...
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1answer
25 views

Using iPod as a Mobile Battery Charger [closed]

Is there anyway to make my (3rd gen i believe?) iPod touch output power? Preferably by a vanilla app, jailbreak, or another method that doesn't require tearing it apart. It current is sitting in my ...
0
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1answer
8 views

Strange behaviour on LCD monitor that doesn't turn on

This monitor will only turn on on 1 out of 8 or 10 attempts at pressing the "power" button, only after I had disconnected and reconnected it to the power line before each attempt, i.e.: Connect the ...
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1answer
30 views

A bit unsure how to hook my power supply up to my video card

I'm putting together a new machine for the first time in quite a while, and I've hit a snag. My new power supply is the EVGA SuperNOVA 1000W P2 80 PLUS PLATINUM. My new graphics card is the EVGA GTX ...
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1answer
36 views

Connecting an 8 pin connector to my 4 pin CPU?

I just bought a PSU which has a 4+4 pin for the CPU. I thought that my CPU has 4 pin connector but when i removed it i realised there were another 4 on the left covered by a small plastic piece. My ...
4
votes
1answer
161 views

Is there a difference between 8-pin EPS12V and PCI-E connectors?

I was reading this article, and a question came to my mind. 8 pin EPS12V power cable 8 pin PCI Express power cable Besides the name and the color, these 2 connectors look the same. Is there a ...
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1answer
23 views

New graphics card - System shuts down when gaming

I bought a new Graphic card yesterday, a Geforce GTX 970, and I swapped it with my old one. and I realize now that maybe I should have done some more research about it beforehand, as it seems there is ...
0
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0answers
17 views

Installed graphics card, which color wires connect

I just installed this graphics card, I am unsure of whether to connect the graphics card 3 black and 2 yellow pin to my white plastic power supply pin which has 4 black 2 yellow and 2 red. I am ...
0
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0answers
43 views

I just assembled my computer and the motherboard started smoking, how do I know which parts are affected?

I was changing my desktop case and after I got all parts together and turned it on, the motherboard started smoking next to the 4-pin power cable (the one that provides power to the processor). I'm ...
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1answer
31 views

6 pin PSU and 4 pin motherboard

recently purchased a new gigabtye 970a motherboard. The only issue I have is that while the atx 12v port on the mobo is 4 pin, the PSU cable seems to be 6 pin. Is there anyway to work around this?
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0answers
19 views

how to identify the exact type of power supply adapter for my laptop by reading the specs on the adapter?

I had this problem with power adapters in general but in this case I feel brainlocked. There are tons of specs on that power adapter, but I cannot identify it. My HP laptop has such a weird plug to ...
0
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1answer
30 views

Do graphics cards, HDs, and other components use different amounts of power even if they use the same slot?

I’ve had this question in my head for a while, and was finally prompted to ask after reading this question which partially hinges on the answer. My question is: does the amount of power used—and ...
0
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0answers
29 views

How can I troubleshoot why my computer shuts down unexpectedly some time after gaming

I played Shadow of Mordor on optimal settings, the temperatures were good. After I was done playing, the temperatures got back to normal in seconds of course, yet 5 minutes later my computer just ...
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1answer
42 views

PSU compability

I would like to ask a few questions about this PSU: RM Series™ RM1000 — 1000 Watt 80 PLUS® Gold Certified Fully Modular PSU Computer specifications: Case: Compucase 6C11BS-UT Motherboard: MB H77 ...
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1answer
34 views

External batteries and maximum output (Multiple devices)

I'm about to buy an external battery with this output specs: AC 230V/ 50Hz. 65Watt (max 85 Watt). It would be similar to this one; picture below for reference: I’m used to see amperage ...
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1answer
39 views

selfbuilt pc shuts down and restarts. 1 long and 2 short beeps

I have built a new pc and I almost finished. When I turn the computer on I starts up but then shuts down again. The beeps I'm getting is 1 long and 2 short which I think is the video card or ...
0
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1answer
45 views

POST failure - Motherboard, PSU, GPU or other?

Last night, I was playing Far Cry 4 and had been at it a good hour or two when the sound suddenly broke up and stopped; next the PC switched itself off. It tried to reboot, but keep failing in a ...
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0answers
18 views

workstation making contineous beep noise

Our silicon mechanics workstation (don't know the exact model, I am guessing it is purchase 5 years ago, The model is either superX8DA3 or super X8DAi according to the manual I found on top of this ...
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0answers
19 views

USB hubs that actually implements Hub Port Power Control? [closed]

No USB hub I have tried actually seems to support "Hub Port Power Control" properly that is required for USB 2.0 compliance. The USB 2.0 standard states that : Self-powered hubs may have power ...
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0answers
18 views

PC Power Supply [duplicate]

Is 750 watt power supply enough for the following configuration: geforce gtx 980 intel core i7 4790k 16gb ddr3 MSI z97 gaming 5 motherboard ssd basic (for os) 2tb hdd some additional fans
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0answers
30 views

What does it mean when my HDD doesn't show any S.M.A.R.T attributes?

I have a Seagate 2TB HDD (about 3 years old) and I've started having strange issues since installing a new PSU (my previous one was on the blink as it kept intermittently restarting my PC). 1 day ...
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0answers
43 views

PSU/GPU/MOBO failing? I'm at a loss here

Here is my total system specification: System Information Time of this report: 11/22/2014, 21:41:56 Operating System: Windows 7 Professional 64-bit (6.1, Build 7601) Service Pack ...
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0answers
34 views

Waking from sleep causes instant shutoff

I am going to be very detailed as this seems extremely confusing to me ... I just completed upgrading a few components in one of my builds (list of components at end of thread). Everything works ...
0
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0answers
15 views

reliable/redundant PSU for SOHO server build

I am after reliable SOHO server build. I went with ECC RAM, quality NAS-grade harddrive and now I am looking at the PSU. I cannot seem to find any good redundant PSUs that would fit into the ATX ...
1
vote
1answer
60 views

PC won't start. Not even to BIOS

I have a PC that’s just over a year old. Today, while playing a game, it suddenly shut down and I smelled a slight smell of something burning; no fire, don't worry~ After this “incident” my PC won’t ...
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0answers
53 views

What about placing a voltage regulator behind an UPS with modified sine output, to protect an active pfc psu?

I moved to an area/building where there are quite some problems with the wall-power supply. Primaraly I would like to protect my computers, secondary I would like have some affordable UPS for some of ...
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0answers
45 views

Power LED keeps Blinking - Asus p52f Laptop

I am facing an issue since a long time. I own Asus p52f series laptop, it's 3 yrs old right now. 2 months back I had to change the laptop battery, since I couldn't find the original Asus laptop ...
1
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0answers
116 views

ASUS Anti-Surge Troubleshooting [closed]

I assembled a computer last year, and I've had some trouble, but now I'm at a point where I'm just not sure what the best course of action is. Here is the problem, So about a week ago, I was playing ...
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0answers
42 views

Dell docking station only works when power supply unplugged

I recently was forced to get a new Dell M6500 chassis and hard-drive for work to replace my old identical model laptop. I have a Dell docking station connected to some peripherals and a second ...
0
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1answer
30 views

What size is the barrel connector required for a Sprint Airave 2.5 signal booster?

Can someone please tell me what size barrel connector tip is needed for ac adapter for Sprint Airave 2.5 signal booster?
0
votes
1answer
48 views

Lenovo power supply

I have two Lenovo laptops and I can't remember which power supply adapter goes to which. One power adapter output is 20V and 2.25 amps, the other is 20V and 3.25 amps. If I were to switch the power ...
0
votes
1answer
59 views

Case/PSU grounding, static causing reboot

I built a machine for work recently that is displaying two distinct characteristics. One: Yesterday, I was able to shuffle feet on our carpet, touch the front of the case, arc static, and the machine ...
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votes
1answer
37 views

System won't respond to Power Switch

I ran into a problem - I can't start my new system at all: when Power Switch is pressed nothing is hapenning, even cpu/system fans are not moving for a split second. And I just was at the shop where ...
2
votes
1answer
38 views

Do Graphics Cards with power connectors still draw 75W from the PCIex16 slot?

The PCIex16 slot on mainboards is specified to supply a maximum Wattage of 75W, so lower end Graphics cards don't need additional power connectors. What about Graphics Cards that do have one or ...
0
votes
1answer
52 views

How do I turn off MagSafe light?

When I go to sleep at night, the two green lights (emitting from both sides of the MagSafe connector of my 13" MacBook Air's power adaptor) light up my whole room. How do I turn these off? I ...
0
votes
1answer
63 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 ...
1
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0answers
37 views

How to run an application in linux just before poweroff and after linux shutdowned itself

I have a embedded system that needs to be power off itself after shutdown. To power off, the Linux should send a command via an i2c to another device to power off the Linux board. So to shutdown and ...
0
votes
1answer
42 views

Can a PSU break a Graphic Card?

My PSU stop working and dont restart, I think it was by overheat. This not the problem because I'm upgrading it this week. The problem is that I connected a GTX 760 which requires 500W, to the 500W ...
2
votes
2answers
60 views

Why is -12V needed on an ATX power supply

Checking the standard ATX connector pinout it mainly gives out "standard" positive voltages, like +3.3VDC, +5VDC and +12VDC. There is one exception, pin 14, which actually gives out -12VDC: Based ...
22
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3answers
2k views

Why is a pin missing on 2x12 PSU cables?

I just noticed that finally entry model PSUs are now giving 2x12 power leads rather than needing to use a 2x10 in addition to a snap on 2x2. For the first time I actually looked at one and I thought ...
0
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2answers
83 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

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 ...
0
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1answer
20 views

Using Thinkpad X131e charger on Ideapad S10e

Can I use my Thinkpad X131e charger on my Ideapad S10e? They have different ends. I figured that instead of buying a new charger, it would be cheaper to buy a converter. The voltage of my charger is ...
0
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0answers
31 views

Does an SDD use less power than a platter/regular drive? [duplicate]

The answer to this question seems obvious to me but I'm asking it in case I've missed something. I have a laptop with a small SSD drive and a large regular/platter drive. I keep a collection of ...