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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40 views

Many PCs, one PSU?

I am in need to build many computers and I must keep the cost low. I can buy cheap 15$ psu, but i really fear about fires/explosions. Is it possible to buy a big, pricey psu and connect say 3 or 4 ...
0
votes
1answer
62 views

What consumes laptop battery when it is turned off?

My Toshiba laptop consumes battery while it is off. At night I usually turn it off and unplug the power supply. I noticed that when I turn it on again the battery is no longer full but around 90%. ...
2
votes
1answer
374 views

how many amps on the PSU 12v rail is used by a motherboard and CPU?

How many amps on the 12V rail does the motherboard, CPU, and RAM use? And how to find out for specific boards? I imagine this would be a reasonably common question people have when designing a new ...
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2answers
60 views

Is daisy chaining UPSs safe? Does it add any benefit or cause more problems?

Is it safe and is their any benefit to daisy chaining multiple UPSs together?
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1answer
120 views

Acer laptop no power signs

I have a 3-4 year old acer aspire 5742g laptop. The past month it has been misbehaving a bit.When I plugged in the power it would take about 5 mins to show any power signs (battery charging light) ...
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0answers
13 views

Dual PSU for dual 7990 setup? [duplicate]

Is this workable? I currently have 3 SATA HDDs, a high end motherboard, a socket 1155 i5-3330, 4 120mm fans and 1 8GB stick of DDR3 RAM. All that's less than a year old (excluding hard drives), and ...
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0answers
61 views

Sudden and spontaneous shutdown when using ACPI

On a Dell Optiplex 755, when I bring the system out from ACPI S3 (suspend) to S0 (normal running mode), the system stays on for perhaps 10 seconds, maybe more. Then it very suddenly shuts the power ...
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1answer
79 views

Can I use two different PSU cables from the same brand?

I have an old rig and a new rig, the "old" one is using a previous generation AX850 (the ones with the gold writing on the side, not the red), and a new RM 850. I want to add a second graphics card ...
2
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1answer
58 views

PSU issue and compatibility

I have an HP Pavilion 6604y desktop. It is a dual core 2.8GHz, 6GB, 1TB HDD. I updated to Windows 8.1. My problem came before I upgraded though. A few months ago I was on my computer when it ...
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0answers
55 views

Battery port/internal battery supply/motherboard problems in an Acer laptop?

I'm not exactly sure what one is wrong. I personally think that it's the charging port, but two different computer repair places have given me the following answers in the title. It's not my cord, ...
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votes
1answer
71 views

Can I use use a Radeon 7750 with a 450 watt power supply unit?

I've been told that I can't use a Radeon 7750 video card because I will risk damage to my motherboard, which is an Asus m2n-mx se plus. They said I should buy an Nvidia 630 GT. Should I buy a new ...
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0answers
36 views

Computer shut down even when it is on AC & battery

My laptop is around two years old. I first receive a message to replace the laptop battery a few months ago. I therefore took out the external battery and powered the computer with AC. But it started ...
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1answer
1k views

Using multiple power supplies in one PC

I ordered a new computer and - as always - I think about upgrading it before it arrives. I thought about adding another graphics card, which would probably push the current PSU beyond its limits. ...
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votes
1answer
267 views

Can I use a 400W graphics card with a 450W PSU?

This is the first time I'll be trying any graphics card. My primary concern is not to play games but running video and image editing software smoothly. I found some good low range card (e.g. AMD/ATI ...
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votes
1answer
59 views

How to determine needed PSU rating for given hardware setup?

Here's the PC I'm going to buy: INTEL Core i5 3570 - 3,4 GHz - Cache L3 6 Mb - Socket LGA 1155 (BX80637I53570) GIGABYTE GeForce GTX 660 OC - 2 GB GDDR5 - PCI-Express 3,0 (GV-N660OC-2GD) SEAGATE ...
1
vote
1answer
38 views

Is PSU voltage ripple something to worry about?

I'm currently putting together my first computer and I've had my eye on a Fractal Design Newton R3. From all of the reviews I've read this PSU comes out shining with the exception of voltage ripple on ...
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votes
1answer
139 views

Tracking down the cause of a blue screen error (code 124)

I've been having problems with a blue-screening PC lately (BCCode 124), and I've been trying to track down whats causing it. I had the idea to run a bunch of stability tests to try and isolate the ...
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vote
1answer
86 views

Is it safe to use a tower case pc horizontally? Does it affect HDDs, power supply?

I've got a PC with damaged GPU card, the card itself doesn't seem to work when the PC case is in the default position (it doesn't even start and when it does it resets itself quite often). Everything ...
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0answers
44 views

When unplugged, the UPS plug gives out current. Is it bad? [closed]

We have several power issues in our house like : Occasionally loosing bulbs (in two holders, the light bulbs went out two times. If we put a new one, it will go out after several days. One went out ...
1
vote
1answer
38 views

Computer wont turn on immediately

Having an issue with my stack, I'll try to describe it as best I can. Was hoping for some advice from you kind people. I turn off my computer normally every time I shut it down, no programs running ...
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0answers
17 views

Dell Inspiron 17N7110 recommended power cord

I need to replace the powercord. One of my main issues is that both the orignal and the current walmart special the brick gets super hot. BTW the walmart special has worked on other computers just ...
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0answers
57 views

Trying to run computer off DC but monitor is always blank

I am trying to get a computer to run off a DC battery. The computer seems to start fine (the CPU fan spins and the hard drive whirs), but nothing displays on the monitor. It just stays blank, as if ...
1
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0answers
98 views

Intermittent hard freeze/crashes, generally while idle. No event viewer details

Subject says most of it. My HTPC will occasionally be found in this hard-locked/crashed state when nothing of note was being done. The past couple times, it has been while the screensaver was running ...
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0answers
168 views

USB Keyboards Randomly Disconnect

I have a puzzle for you; I've been banging my head against the wall for the past week trying to figure this out, and I just have no idea what it could possibly be. If you can figure it out I will give ...
2
votes
1answer
33 views

GPU and MOBO Bios

I have an older PC with Specs CPU e7400 (C2D) GPU 9600gt MOBO MSI p45 neo PSU 550W So my cousin gave me his old 8800GTX to replace my card. After connecting the two six pins and all the PC won't even ...
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votes
0answers
72 views

Computer randomly shuts off, and won't start until power is reset

I have been having an issue with my computer lately. The computer randomly turns off, as though someone pulled the plug, except and USB attached hardware, and motherboard remains powered on. The ...
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votes
3answers
124 views

Computer sometimes doesn't boot after power failure, what should I replace?

I have a new computer that behaves strange after a power failure. When I switch off the computer it will not boot anymore. Completely unplugging the computer for about an hour cures the issue for the ...
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votes
1answer
128 views

What PSU to use for a home server with many hard drives [closed]

I have a home server with many uses, but its main use is to hold all the storage I need. The hardware is pretty old: an Intel mobo with a Core 2 6600 and a NVidia 7600GS, to which there are 6 drives ...
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2answers
168 views

Computer cables explained [closed]

I've noticed lately that places to learn about both power supply cables and also peripherals and fans aren't that easy to find. There's very little information available that gives detailed ...
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votes
1answer
49 views

Computer randomly shuts down with a fading alarm power button and CD drive

I am currently experiencing something very very odd. Having build my PC myself, I have never had any issues (or anything heat related). A few moments ago my computer shut down very randomly and ...
2
votes
4answers
565 views

Motherboard HDDPWR1 connector

I need help identifying the name of a connector. I have a Gateway DX4870-UB318 computer, I opened the case and wanted to attach another hard drive, but to my surprise one existing SATA hard drive was ...
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votes
2answers
41 views

Is it possible to disable power supply turn off switch?

I've got OCZ ModXStream Pro 500W and I'm wondering if it's possible (and what's the best way) of totally disabling the power off switch button? I don't have much space under my desk, and I way too ...
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1answer
89 views

My computer will not turn on

I recently built a gaming PC. It was working fine before the following events: I installed a graphics card driver update then: in Windows it said that the User Experience Index needed to be refreshed, ...
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votes
1answer
54 views

Processor voltage spec and motherboard socket voltage spec mismatch

I have an Intel Processor E2160 [Socket LGA775, spec no. SLA9Z (CPU Voltage: 0.85V-1.5V)] Can this processor be installed on Intel DG41TY Motherboard (LGA775)?. The Processor Spec No. mentioned for ...
2
votes
0answers
42 views

Computer won't power on

Was working fine for over a year, now won't boot. LEDs on the GFX card and one on the MOBO labeled PWR glow when plugged in, but nothing happens when I push power and shorting switch pins does nothing ...
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2answers
234 views

Computer will freeze/ lock up after doing relatively stressful things

I'll first start off by saying that the issue GENERALLY doesn't occur unless I'm doing something remotely stressful for my computer. This issue used to occur whenever it felt it was necessary, however ...
1
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0answers
143 views

USB ports causing Wireless and Mobile Phone tethering drop out

I have a problem with my USB ports and I can't seem to pinpoint the problem. I'm hoping that I can get some idea as to how to troubleshoot my problem. Problem description: I recently bought a USB ...
2
votes
6answers
3k views

Laptop screen turns off on removing power cord

After a recent upgrade to Windows 8.1 Pro from W8, my laptop's (an ASUS X54H) screen turns off as soon as you remove the power cord. It turns back on with no issues when you plug the power back in. ...
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votes
1answer
177 views

Powerful mini ATX gaming PC and extreme low power hungry download server in ONE

I want to build a really powerful gaming machine with some kind of a media server streaming full HD contents to the whole room and TV, but at the same time, a "magical button" which turns this power ...
0
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2answers
72 views

No SATA drives after PSU Upgrade

I know this sounds a lot like this but I just confirmed that my MBR is fine as well as the SSD drive in question. What happened: I upgraded my be-quiet 700w PSU to the 1000w dark power pro. When I ...
0
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0answers
89 views

Mouse Hang with voltage fluctuation

I bought a new assembled PC about a month ago, but for the past 7 or 8 days I found my mouse cursor hangs every time there is a voltage fluctuation on my UPS (when sound comes from the ups the mouse ...
0
votes
0answers
254 views

Laptop won't turn on after it was shut off. Is it dead?

I'm currently I'm using my laptop without battery because my battery was dead. I didn't buy a new battery because I don't have a cash for now. Since then sometimes I accidentally unplug or sometimes ...
1
vote
2answers
174 views

New video card HIS 7790 OC 1GB: sytem doesn't boot

I've upgraded my old video card Gygabyte 7750 to HIS 7790 IceQ Turbo. After installation of card onto mobo, plugging power into video card and powering on, system starts but doesn't boot. Power is on, ...
1
vote
1answer
76 views

Computer making beep sounds

i left the computer downloading with IDM and told it to shut down when the download is finished, when i came back i pressed the power button and i got 1 long beep and 2 short beeps then it keeps ...
1
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0answers
232 views

Monitor in power saving mode while CPU is still running

I am have a problem with my LCD going into power saving mode. It all started about three days back by randomly going into power saving mode while PC is smoothly running. Then the frequency of going ...
0
votes
1answer
50 views

PC will not power on with normal power supply

My ASUS M2N-SLI motherboard would not turn back on after running fine for 5 years. Connected a new (still in the box) 430W power supply - ATX 2.1 - the system powers on. The power supply doesn't have ...
0
votes
1answer
451 views

eeepc 701SD 4G Power Up Fails - Will not power up / boot

I have a critical failure with my eeepc 701SD 4G: Will not power on at all. - Power button pressed = nothing happens at all. absolutely nothing. - Battery light shows orange and doesn't charge - ...
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0answers
62 views

Should The Plug of UPS Always Plugged?

Which is better for lifespan: Switch off the UPS and plug off or Switch off the UPS and leave it plugged in. Consider this two statements and give seperate replies: Which is better for >1 Month ...
5
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3answers
579 views

Is my UPS battery dead or is my UPS broken?

When the lights went out today I noticed my UPS battery didn't work. I checked the monitor and this is what I see: As you can see it says the battery has 90% but when I pull the plug, it doesn't ...
4
votes
1answer
91 views

PC Does not turn on

I have this weird issue, that I've had for a very long time. I've spent many hours trying to figure this out, but cannot figure it out. I purchased a Cisnet machine around 2008, which runs Windows ...