Electrical power is essential to the operation of any computer and any of its components or peripherals.

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1answer
13 views

Can I charge my laptop using a power bank using my laptop charger?

I have a Dell XPS-1530 laptop with a 9 cell battery. It's working fine but I was just wondering whether I could use a power connector or something to plug my laptop charger's 3 pin plug into another ...
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0answers
18 views

Sata Power Connection Broken Off but Pins are ok

So, that crappy plastic connector holder on my hard drive broke off while I was moving drives around. Does anyone have any suggestion on a work around, I've tried crazy gluing a Sata Power plug to ...
0
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2answers
38 views

How to ensure an external DVD drive will receive sufficient power from a USB port - before purchase [on hold]

There are various external USB drives, some require external power supplies, some have optional external power supplies, some have 2 USB plugs, 1 for power and 1 for power + data. If I have a device ...
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0answers
11 views

Monitors consistently powering on and off for roughly one hour after being turned on. What might be the culprit?

I connected 3 external monitors to a Surface Pro 2 (Windows 8) by placing the device in the Surface Docking Station, and connecting: One USB port to a single HDMI cable via an External Graphics Card ...
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votes
1answer
27 views

Computer not turning on but tries to [closed]

My computer is a Dell Vostro D11M. It is not turning on, however after unplugging it and replugging I managed to work on it perfectly. Then next time I turned it off it never turned on again. When I ...
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0answers
25 views

windows 8.1 wont sleep and wake

I have problem with my windows 8.1 on my Acer Aspire E1-572G Laptop . When I close the lid or press sleep button , pc wont go sleep (as I can hear fan and see that lights are on) , and by pressing any ...
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1answer
29 views

Power Brick humming [duplicate]

When a power brick is humming is that a bad thing? What does it mean. Does having it plugged into the wall directly or in a UPS or in a daisy chain of power strips make a difference
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0answers
19 views

Laptop won't turn on, only power button lights up

My laptop is failing to turn on fully. The only thing that happens with the laptop is the power button lights up. It stops lighting up after about 8 seconds of me pressing it and once I release it, it ...
0
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1answer
17 views

MSI GX660 laptop power fluctuations

Okay. So my trusty laptop has come down with an issue. It won't always take my power supply, resulting in 2 cases. One is that it simply does not receive the power, the other is more peculiar. The ...
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1answer
72 views

Windows 7 - Change what closing the lid does, UTILITY/CMD

I wonder if anybody knows a utility, or command, which can change this setting in windows in one click. I often need to change it on my laptop whether I want it to do nothing when the lid is closed or ...
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0answers
20 views

Can I safely abort a Windows 8 update-restart?

My Windows 8.1 laptop is stuck in a bout of 50 updates. These are horrendously slow and are delaying my work. Can I safely interrupt the update process, i.e. issue an ACPI power off?
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0answers
32 views

Why is Erlang wasting my power? [closed]

I usually don't plug in my dev machine until sometime after lunch because mornings are very... Mobile? ...at my job. This is cool and all because mornings are also fairly short and my laptop has ...
0
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1answer
81 views

Windows 8.1 not activating screen saver, turning off monitor, or sleep mode

Any ideas on what would cause this? No applications that I actively run should be preventing this from happening: OneDrive, Steam, WhatPulse, puush, and f.lux. I have power options set to activate ...
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0answers
18 views

Laptop runs on battery but not running or charging from power adapter

I have a Lenovo Y470 on the bench. It runs off the battery till dead, has no power LED but power is present at mainboard from charger. So here are the existing conditions: Charger is good 19 volts ...
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2answers
79 views

Chance of data recovery from an unreadable microSD card

I have sent my dead microSD card to a data recovery company, but it could not help me. The following is the diagnosis by the company. Can the existing technology help rescue my data? ...
1
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1answer
11 views

Laptop cuts from external power when using too much energy

I have Acer Aspire 7750G and I've had this problem for some time now. I had problems with my display, it was going white for some reason. When I got it back from a repair shop, they said it was a ...
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0answers
43 views

“No Battery is Detected” but battery works

The Question: How do I get my battery to be detected again? My system is dual boot Windows/Linux. On Linux, for a while, the system claimed that the battery was always at 15%. Now, it says there's ...
13
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5answers
2k views

What is the 6-pin power connector on an HP ProDesk?

I have an HP ProDesk 600 G1 desktop PC, and I'm upgrading it with a new graphics card and a new power supply. Now, the problem I'm having is that the motherboard in the PC doesn't have a standard ...
0
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1answer
46 views

ThinkPad X220i appears to power on but won't start - no BIOS or beeps

I have a ThinkPad X220i laptop here (4-5 years old, out of warranty) that won't power on any more. Looking for any tips to get to the cause and repair it. The problem: When you press the power button ...
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0answers
28 views

Automatically start a computer when power turns on

I installed Ubuntu on an old laptop (Lenovo T400) that I now use as a home server, running 24/7. I live in an area where long power outages are quite common, so if the power goes off there's a good ...
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1answer
51 views

Is it safe to power a 140mA laptop cooler pad off a USB 3.0 port?

I have acquired a laptop cooler pad that connects to a USB port for power. The problem is it draws 140mA. That's more than a dumb device is allowed to draw off USB 2.0 (max is 100mA unless the device ...
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3answers
25 views

Real Machine randomly refuses to start

Folks I`m completely clueless. I have a machine with the configurations above. By some strange reason at random times it refuses to boot, fans will spin but seems no power enough is generated to get ...
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0answers
22 views

Windows XP Turn Off Monitor after x minutes option is missing

I have an XP machine that turns it's monitor off after a period of time. I am trying to disable this but when I go to the power options in the control panel the option is simply not there. Turn off ...
64
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9answers
4k views

“Turn off router for 10 seconds” - Quantifiable? [duplicate]

Is there any quantifiable evidence to support power cycling routers for 10 seconds or any arbitrary amount of time, instead of just unplugging and plugging back in? This is related to troubleshooting ...
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2answers
54 views

Loose power-cable connection

Low-tech but high-consequence. I have a laptop with the power-cable connection causing the power to be disconnected if it gets moved a bit. I've tried with other cables and get the same behavior, so ...
2
votes
4answers
244 views

Does charging a Li-ion battery smart phone through a computer's USB port put additional strain on the battery vs a wall charger?

I was curious about this. I read that you should generally avoid completely discharging and then full charging your Li-ion battery because this can strain the battery (though some suggested doing this ...
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0answers
15 views

Stacked transparent windows with program name tabs slid down screen while Windows 7 64-bit computer died

My Windows 7 64-bit Toshiba Satellite P755-5320 computer with 750 GB hard drive and 6 GB memory died after stacked transparent windows with tabs displaying program names slid one at a time to the ...
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2answers
55 views

Ran power through a USB port- am I out of luck?

I'd like to preface this by saying I'm an idiot. Long story short, I stuck my Acer Aspire V's power cable into one of its USB ports and the computer unceremoniously died. Plugging it in shows no ...
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0answers
34 views

Why does my power supply switch off after half a second?

My computer has been working fine with an existing 650W power supply (Foxconn P55MX / intel i5 / 1 x SSD, Nvidia GTX 650). I tried to make it a bit more quiet by purchasing a 650W seasonic PSU. I ...
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1answer
82 views

Power Supply Rating versus Graphics Card requirement

Windows 8.1 64 bit Lepa N500 Power supply GTX Geforce 650 ti boost My Lepa N500 Power supply is rated at 500 watts. I read some about PSU's and it says that the overall rating isn't really what ...
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0answers
29 views

See power usage Win XP & 8

I actually have 2 questions, but as they are practically the same, I figured it would be handier to ask them all at once: 1. Is there a build-in tool on WIN XP to see your power usage? Or do I ...
0
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1answer
29 views

Remotely waking up my desktop through WiFi

I have a desktop computer with a WiFi adapter in a PCI slot. (It is currently unfeasible for me to get an ethernet line into my room.) 1) Suppose I leave my desktop in sleep mode (Windows 7). Is it ...
0
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2answers
45 views

Can Bluetooth headphones be powered solely by 3.5mm audio jack?

Is that possible for Bluetooth headphones to be powered solely by the 3.5mm audio jack? Especially if it runs out of juice? I am using Outdoor Tech OT1400 Bluetooth headphones and just wondering if I ...
0
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1answer
32 views

Will my laptop work in the U.S

I bought a PlayStation 3 from the us and when I moved it back to Egypt I had to use a stabilizer for it to work, do I have to do something similar for my laptop which I bought from Egypt (the normal ...
2
votes
1answer
812 views

Is it safe to use one 6 + 2 PCIe power cable to GPU

I will be installing a R9 290x that requires both a 6 pin PCIe power connector and a 6 + 2 PCIe power connector. Is it ok to use one PCIe 6 + 2 power cable from the PSU that splits into two 6 + 2 ...
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2answers
40 views

Immediate Restart After Power On - Before BIOS

When I originally built this PC, it had an issue with randomly restarting. I proceeded to try a bunch of things and ended up unplugging everything except the power switch and the cards I have in it. ...
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2answers
34 views

In Linux, how can I determine the power consumption of my HDD?

Is there a way to determine how much power my HDD(s) are using? I'm running typical (oldish) desktop with an 848P chipset and Debian GNU/Linux 7.6 (Wheezy).
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0answers
41 views

Computer wakes from sleep instantly. No lastwake information

My parents' computer wakes instantly when put to sleep. It spins down and then starts a second later. There are no devices set to wake, lastwake gives no information, eventvwr is empty, and the power ...
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0answers
23 views

Strange issue with electrical outages and charging my Asus Eee PC

I have an Asus Eee PC 1000H netbook: http://www.asus.com/Notebooks_Ultrabooks/Eee_PC_1000H/ Every now and then, during a storm or so, the electricity in my house will flicker and I'll get a power ...
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0answers
84 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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0answers
27 views

Is something wrong with my ac adapter, or my laptop?

The green led light is on (the brick) when I plug it into an outlet. However, as soon as I plug the other end into the laptop, the light goes out and will not come back on until I disconnect it from ...
3
votes
1answer
65 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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0answers
22 views

No Multimedia Settings in advanced power options

my laptop is lagging when running 3D application while i plug my charge. and i found the solution. i don't know if it's working or nut but i want to try it. it says " open the power settings, then ...
0
votes
1answer
48 views

How long does it take for a new laptop battery to get charged? [closed]

I just bought a new 6 cell Lenovo battery for my Ideapad. But it doesn't seem to get chraged. It's been an hour but there is no change in charge percentage. Is it normal for a new battery. At first I ...
0
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1answer
9 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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0answers
24 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 ...
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4answers
150 views

Shut down PC at a determined time

I have a software (calibre ebook manager) that fetches news at 6 am. I want to do the following : Wake computer at 5:50 if not already on.(easily done in bios) A scheduler opens calibre at 5:55 ...
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1answer
33 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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1answer
62 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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0answers
142 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 ...