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

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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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14 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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23 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 ...
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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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15 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 ...
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1answer
27 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 ...
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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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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 ...
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4answers
135 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
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 ...
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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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0answers
17 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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29 views

Can holding down power button and starting back up multiple times do damage?

My desktop computer wasn't shutting down properly from the UI or by just pushing the power button, so to troubleshoot what was going wrong I had to hold down the power button and start the computer ...
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1answer
34 views

How to disable automatic brightness setting on LG monitors?

I have two LG monitors (both 23MB35PM) which have an annoying and distracting feature of automatically changing their brightness at random times, probably due to some power saving mechanism. How can ...
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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
18 views

Peripherals won't start

First off sorry for terrible grammar, I'm writing this from my phone. Anyway, I've had an interesting problem with my PC ever since I moved it to a different location around six months ago now. When ...
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1answer
49 views

What do I need to do in order to protect my hardware from electrical damage? [closed]

The Specifics I've just recently started using more equipment. My set-up consists of two external monitors powered by a laptop (15" late 2011 MacBook Pro if that matters). I have a docking station, ...
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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 ...
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1answer
51 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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2answers
91 views

Are there 3-pin to 2-pin power connectors for motherboards

My (old) case front panel has a 3-pin power led connector (inc. one empty slot in the middle). My (new) motherboard has a 2-pin power led connector. How do I connect the two? If I try to connect the ...
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1answer
40 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
191 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. ...
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0answers
63 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 ...
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0answers
24 views

Prepare Debian/Raspian for Power Loss

My school is in the process of buying two Raspberry Pis for use in the commons to display the news. I'll be creating a startup script to automatically a USB flash drive with a video on it, and to have ...
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2answers
458 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 ...
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1answer
30 views

Laptop not powering on

Two days ago, I was hurrying to an exam and had to walk in the rain, resulting to my backpack getting rained on. When I got home, there was a tiny amount of water on the side of my laptop, but it ...
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0answers
28 views

Bluetooth Speakers Turn Off Suddenly Windows 8.1

When my computer which is using Windows 8.1 goes to sleep mode, my bluetooth speakers turn off. Is there a setting to keep the speakers from turning off when the computer goes to sleep mode? Thanks.
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1answer
31 views

Can I press Shift + Power or double press the Power button to make my computer restart?

I find that in Mac, you can have a combination of the power button like it is a normal one. I wonder if this still works in my Acer laptop. I have tried to tweak it in my OSes (Windows 8.1 and Linux), ...
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1answer
48 views

What is the “known hardware incompatibility” that disables PCIe Active State Power Management? How do I fix it?

I'm on Windows 7. I just ran a Power Efficiency Diagnostics Report through powercfg -energy and I got this error: Platform Power Management Capabilities:PCI Express Active-State Power Management ...
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3answers
43 views

Make Windows 7 hibernate when unplugging charger

I have a laptop where the battery has reached a state of being pretty much useless. Neither Windows 7 nor Ubuntu 14.04 is able to correctly estimate the actual power percentages or lifetime of the ...
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1answer
52 views

PC not shutting down properly

I have to press power button for a few seconds on every shutdown because PC won't power off automatically. When I press "Turn Off" button, there is a standard shutdown dialog. After a while the system ...
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1answer
927 views

ASUS X551M won't come on and does not charge too

My ASUS X551M shut down itself and won't come on. It does not even take power when i plug in charger. It shut down itself when i plugged in a flash drive in one of the ports which i later realized is ...
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28 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 ...
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1answer
34 views

Windows power plan has no effect on laptop

Out of nowhere power plan stopped working, looks like it just stuck on power saver. All I did was connected from work for few minutes, when came home logged in and it was on "High performance" but ...
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1answer
28 views

Minimize power, but still have remote desktop

I am running Windows 8.1 on a ASUS M5A97 r2.0 motherboard. When idle, the system uses about 70 watts. When asleep, it only uses 5 watts, but remote desktop obviously does not work in this state. I ...
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1answer
45 views

External Harddrive Shutting Off and On Every So Often While Listening to Music

I am always listening to music on my PC (always via VLC Player) and every so often - maybe once every 2 songs, sometimes more frequently- the music stops playing (VLC's buffer/progress bar stops ...
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3answers
62 views

Shutting Down or Hibernating Overnight?

This question is for the all important reason of winning a bet. Which of the following is more energy efficient? Leave a Windows 7 computer sleeping overnight Leave a Windows 7 computer hibernating ...
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0answers
89 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 ...
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0answers
15 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 ...
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2answers
46 views

Does a graphics card need leeway power?

So I'm looking to buy a new graphics card that says it needs 150 watts to run, the AMD Radeon 270. I can get it the 150 watts, but does it need some extra power as leeway or will it be just fine on ...
0
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1answer
69 views

Visual Studio corrupted my Windows 7 after power failure, in the middle of installation

I was at the middle of Visual Studio 2012 installation that the power went off! after I turned my computer on, Windows 7 boots up with welcome screen and an empty dialog like the picture below: ...
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1answer
135 views

Does turning off the monitor drop GPU power consumption?

When I manually switch one of my monitors off in a dual monitor setup does the GPU drop power consumption and stop sending a signal to the monitor? Does it work the same way when Windows turns off ...
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1answer
35 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 ...
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1answer
30 views

PC not going to sleep windows 7

PC not going to sleep windows 7... Please help me come from this issue. Tried many basic steps to resolve this. But some services are stopping the PC not to sleep mode. For ex : In my org, we have ...
0
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0answers
66 views

Laptop battery won't charge past 68% after dc jack replacement?

Sony Vaio FW41E laptop / Vista I experienced charging problems when the prongs on the original dc jack loosened. I have replaced the dc jack and cable, making sure I ordered a compatible part. ...
0
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1answer
547 views

Can you charge a tablet and use a USB device at the same time?

Most tablets only have a single Micro USB port that is used to charge the tablet, or can be used to plug in regular USB devices like a keyboard/mouse using USB OTG. I would like to charge/power my ...
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1answer
289 views

Lenovo W510 randomly shuts down, won't boot

Today I went to turn on my Lenovo w510 and it wouldn't stay on long enough to boot. I tried it plugged into AC power (with and without the battery) and on battery power alone. All attempts yielded the ...
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0answers
41 views

Randomly loosing power to all USB ports than forced to reboot

This is going on since about 2 months now. A wrong mouse move and everything stops. All USB ports loose power. My first thought was acceleration , or combo between Skype and Adobe Suite. Wrong. ...
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0answers
167 views

i can't turn on system power icon in win 8.1

The power icon in the system tray is missing. I have tried right clicking the taskbar then selecting properies and then 'turn system icons on or off' the power icon options are greyed out and set to ...
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1answer
94 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 ...