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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18 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
15 views

New SD in system, old HDD now not working [on hold]

Recently I purchased a Samsung 840 EVO 120GB SSD to upgrade my system. I previously had Windows running on a 750GB normal Hard Drive. Now I have Windows running on my SSD, and I was planning on ...
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0answers
14 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
15 views

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

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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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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26 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 ...
0
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0answers
37 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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18 views

New build: i7 5820k MSI x99S SLI Plus, Need CPU Cooler, Case, PSU [on hold]

I'm building a new computer, so far I've bought these components: Intel Core i7 5820k Processor MSI X99S Sli Plus Motherboard Crucial DDR4 2133mhz memory - 4x4gb sticks totaling 16GB XFX Radeon R9 ...
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0answers
28 views

Is there a solution for powering fans (and/or hard drives) from a separate power supply, if space in computer case is limited?

I have a full tower with six hard drives and five fans. The computer has a blue screen of death about once per day, but I noticed that it does not happen if all of the fans are turned off (case being ...
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0answers
25 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 ...
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0answers
9 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 ...
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1answer
51 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
22 views

new hardware, pc won't display [closed]

I've just upgraded my cpu, psu and gpu, and now my pc isn't booting. I've 8nstalled the fx9590 8 core into the asus crosshair v formula. As the pc booted with no warning led's, i assumed it was the ...
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0answers
43 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
15 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 ...
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0answers
43 views

New GPU. Computer shuts down unexpectedly after (semi) intensive graphics use

I recently purchased a GeForce GTX 760 and ran into this problem. I had a GT 640 to begin with and had no problems what so ever(except for shotty graphics). I installed my GTX, updated my drivers and ...
1
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0answers
55 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
30 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 ...
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1answer
26 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
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1answer
36 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
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1answer
38 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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1answer
33 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
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1answer
27 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 ...
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1answer
38 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 ...
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1answer
45 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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0answers
36 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 ...
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1answer
33 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 ...
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votes
2answers
50 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 ...
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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
44 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
votes
1answer
46 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
17 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 ...
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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 ...
0
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1answer
37 views

Computer Hard Reset Issue

Wanted to get some feedback and ideas on a issue I'm having. Certain video games cause my computer to hard power reset (as in it powers off with no warning then turns back on). I've identified ...
0
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1answer
32 views

Asus laptop doesn't turn on

My girlfriend has an Asus laptop with a battery that dosen't work, so she uses it while it's connected to the wall. This laptop has been in use for 2 years+ I think, and today suddenly, it stoped ...
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2answers
80 views

Can a power bank work as a laptop battery alternative?

So here's the thing. My laptops battery is almost dead and I'm planning to buy a new one. The problem is that where I live, the power shortage is a very normal issue. I have a 15 inch basic laptop. ...
2
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0answers
59 views

Computer won't start unless power is removed for ~2 hours

About 6 months ago I built myself a desktop. A few weeks ago the computer started to act strange, for example it wouldn't always give a video signal when it came out of sleep. Now the issue has ...
1
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3answers
42 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
61 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
33 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
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3answers
37 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 ...
49
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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 ...
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2answers
450 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 ...
1
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0answers
49 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
54 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, ...
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0answers
49 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 ...
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1answer
40 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 ...
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0answers
51 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
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1answer
53 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 ...
4
votes
3answers
370 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 ...