Tagged Questions

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

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0
votes
1answer
7 views

How to disable automatic brightness setting on LG monitors?

I got 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 I ...
1
vote
0answers
34 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 ...
0
votes
0answers
12 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 ...
0
votes
1answer
43 views

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

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, ...
1
vote
0answers
33 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
40 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
votes
2answers
68 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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votes
0answers
42 views

Computer turning on and off

When I press power button my computer turns on for 5 seconds, then off. If I try few times it eventually turns on. I have replaced RAM and graphics.
0
votes
1answer
28 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 ...
1
vote
2answers
65 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
votes
0answers
56 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
vote
0answers
23 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 ...
5
votes
2answers
448 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 ...
0
votes
1answer
27 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 ...
0
votes
0answers
19 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.
-1
votes
0answers
18 views

Why does my dell latitude start immediately once connected to power?

When i plug the laptop it immediately turns on and starts running and my power button is not working why and what should i do to use my switch to power on and off?
-1
votes
0answers
38 views

Headphone noise humming due to possible grounding issue?

I have a computer I have had for a while with a Cooler Master GX 750W with a TPower X79 motherboard and I seem to be having a grounding issue with my headset, Corsair Raptor HS40. I get this constand ...
0
votes
1answer
28 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), ...
0
votes
1answer
34 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 ...
0
votes
3answers
38 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 ...
0
votes
1answer
48 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 ...
0
votes
0answers
460 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 ...
0
votes
0answers
22 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 ...
1
vote
1answer
30 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 ...
0
votes
1answer
26 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 ...
0
votes
1answer
35 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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votes
3answers
58 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 ...
2
votes
0answers
86 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 ...
1
vote
0answers
14 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 ...
0
votes
2answers
41 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
votes
1answer
48 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: ...
0
votes
1answer
90 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 ...
0
votes
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 ...
0
votes
1answer
25 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
votes
0answers
53 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
votes
1answer
293 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 ...
0
votes
1answer
178 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 ...
1
vote
0answers
39 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. ...
0
votes
0answers
101 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 ...
0
votes
1answer
73 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 ...
0
votes
2answers
76 views

Can a power strip being turned off and on again damage a computer?

I have both my computer and monitor plugged into an extension cord and then into a power strip (I've checked, and both the extension cord and the strip can handle the load and have been handling it ...
0
votes
1answer
148 views

Toshiba satallite r830 won't start, only orange flashing power symbol.

My Satallite R830 won't turn on. The power symbol flashes orange 8 times then pauses and restarts. there are 6 quick flashes followed by a longer one on the 7th flash then another quick one. The ...
0
votes
0answers
79 views

Dell inspiron n4010 battery won't charge

I'm having a dell inspiron n4010 laptop. The battery was getting weak day by day and one day I used the battery to full of its capacity. From next day on wards the laptop won't power up with the ...
0
votes
0answers
134 views

Is there any way to “Wake on LAN” a MS Surface Pro 2?

I have a Microsoft Surface Pro 2 that is embedded in an exhibit where it is difficult to access the physical power button. The exhibit space is only open for 8 hours of the day and I would like to ...
2
votes
1answer
113 views

Multiple cable adapter setup not working - VGA to smartphone. All cables tested and work

Issue Pictured overhead projector setup does not work. #1 -> #2 -> #3 -> Phone. All cables are tested and work! The issue is the HDMI connection between cable #2 and #3. With all other cables, the ...
-1
votes
1answer
34 views

What are the impact on underpowering my motherboard/graphic card?

I recently had to change my PSU and the one that was given to me has not enough power cables to fully plug every plug in the motherboard and the graphic card. It seems to work just fine though, and ...
0
votes
0answers
25 views

Computer can't boot

I have a 1 year old PC and the last weeks, when I press the ON button the PC doesn't power on ( Like I didn't press the ON button ). I have to plug and unplug a few times the power cord in order to ...
0
votes
0answers
72 views

How to measure power consumption in Windows 8

I want to measure real time overall power consumption of my laptop and I would do it with a software. After some searchs on the web I found out that Microsoft developed Joulemeter, a software able to ...
0
votes
1answer
29 views

Using a line conditioner to improve network performance

I have been reading on many A/V forums that people use line conditioners to improve the quality of the video and sound in their entertainment systems. And this got me thinking. Would adding a line ...
0
votes
2answers
82 views

Does running a laptop without the battery cause it to consume more power?

If I am using a laptop without battery and running it on direct charging, does it consume more power or same as with battery?