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

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inspiron shuts off repeatedly when ethernet is plugged in

I have a Dell Inspiron 5348 that shuts off (as if the power is cut) when the ethernet cable is plugged in. At first it will run for 3-4 hrs, then shuts off at shorter intervals until it won't stay on ...
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1answer
34 views

How to disable the shutdown/hibernate charge technology in my Asus laptop?

My Asus laptop with windows 7 has a very persistent sleep charge technology (it keeps the power on even after the computer shutdown). How can I disable this feature? I don't see anything related to ...
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3answers
41 views

Why isn't my computer turning on past boot screen?

I have an old server computer from 2005 that still has a lot of potential in my opinion. I acquired it from my dad’s old storage unit. It was running well for about a month and then one day—in the ...
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2answers
43 views

Is there any way to completely disable the physical power button on a laptop (running Windows 10)?

Is there any way to completely disable the physical power button on a Lenovo Yoga 2 Pro laptop running Windows 10? When I say disable, I mean completely (so not allowing reset even if you hold it).
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2answers
31 views

Is there anyway to get rid of the shutdown/sleep option in the lock screen in windows 10?

The reason why is quite complicated and cant be explained ATM. I'm pretty sure there's an option for it in the settings but I can't find it.
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0answers
43 views

Power Outage Causes Downgrade from Window 10 to Windows 7? How?

Ok, I admit I'm confused. I upgraded several workstations to Window 10 from Windows 7 a couple of weeks ago. Yesterday, a power outage caused these computers to shut off improperly. One of the ...
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1answer
17 views

Power consumption of different computers

I have an old computer dedicated solely to running a lightweight web server running on Ubuntu. This is actually quite a powerful computer but I do most of my work off a newer computer. Recently, ...
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1answer
30 views

How can I give more power to usb devices connected to my laptop?

I am getting a USB audio interface with mic preamplifier and I am worried if my laptop will be enough to power it (or if it won't get damaged by by the device).Is there a thing I could connect between ...
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1answer
42 views

USB Type C Power Delivery Profile - max length?

The new USB-C connector allows for 100W to be delivered to charge laptops etc. Is there a maximum length for a charging only cable? The specification talks about cables being less than two meters ...
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1answer
11 views

Laptop falls asleep too early

I'm using Dell Inspiron14z laptop. My current power plan dims the display/ turns off the display/ puts the computer to sleep after 15/30/60 minutes on battery and 30/60/120 minutes when plugged in. ...
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0answers
13 views

FreeNas recovering from power outage

I installed freenas on one machine I have and had a power outage. It seems my shares did not reload automatically. I read somewhere that i have to import the disks manually. When I do that I am asked ...
5
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1answer
533 views

When is too much voltage too much on a PC?

TLDR: The BIOS shows voltages as vcore: 1.248, 12V: 12.566, 5V: 5.160, 3.3V: 3.424. Is this bad? I got one miniITX motherboard that supports a 19 V laptop input instead of the regular ATX ...
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0answers
18 views

Is there any way (other than actually connecting the charger) to simulate charger connected in a laptop?

I want to know if there is any software or any hack or trick I can use to simulate AC Charger connected to my laptop without actually connecting the charger. My laptop's Display Power Saving Tech ...
2
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1answer
28 views

Optimal monitor resolution

Currently, there are a lot of monitors capable of displaying 4K resolutions, for example the one used in this Alienware laptop. This laptop has 15 inch display with 4K resolution. I have a few ...
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1answer
43 views

Laptop Charger Short Damage

today while I was plugging in my laptop charger a really unfortunate incident happened. The laptop side plug fell down and made contact with the wall jack as I was plugging it in causing a short. It ...
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1answer
28 views

Is it necessary to turn off power supply switch to monitor when you shut down your computer?

The computer monitor gets its power from an adapter, while the adapter is connected to the a power strip with its own switch. When the computer has been shut down, the monitor indicator keeps ...
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0answers
32 views

Reducing idle power usage of DDR3 SDRAM

I'd like to reduce the idle power consumption of my computer, with the goal of keeping it always on without a large impact on my energy bill (energy is quite expensive over here.) Using HWMonitor I ...
0
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1answer
27 views

Asus 501JW computer wont start

I have an ASUS ROG 501JW, I put it to sleep and after trying to wake it up, the ASUStek application said it was erasing everything from the flash drive, panicking at the imminent loss of information, ...
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0answers
40 views

Determine which component failed on a motherboard

Laptop powers up from the battery but it does not from the charger and it doesn't charge the battery either. I have measured voltages on power circuit components (see in the attached image). ...
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0answers
14 views

Power Issue- Not charging

I have an Acer Aspire V5-571 that is not registering the charger is plugged in. The ac adapter is in perfect known working condition. I have replaced the power jack thinking that was the problem, to ...
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1answer
25 views

Is it possible to make a laptop behave as if it is working on battery?

Is it possible to make a laptop behave as if it is working on battery, while in fact it would be working on AC power? I have some HW problem with my laptop. It reboots for unknown reason every time ...
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0answers
20 views

U2442 laptop no power

I have a gigabyte U2442V that does not power up when I press power button... No LEDs are on. For some reason before its death I had to keep doing static discharges to make it work... A while after ...
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0answers
20 views

How can I fix my pc after power failure during windows updates?

I was executing windows updates on my pc. The power failure was caused by the main motherboard power connector. A prong on this connector was bent enough that it was wedged into the motherboard and ...
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1answer
39 views

Does an external hard drive draw more current writing or deleting files?

I have an external hard drive that is powered off of the usb connection to my Raspberry Pi. I use it for Time Machine back ups so it is almost always writing data to the external hard drive. However, ...
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0answers
26 views

Restore open applications and files after a manual restart

Sometimes when I log in to my pc in the morning it has restarted (possibly to power cut or updates?) and all my applications such as SQL Management Studio, Visual Studio(s) etc re-open any queries, ...
2
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1answer
36 views

Surge Protecter's Grounded Light Turning Off

I've got a new PC setup in a new apartment (built before 1980s), however the surge protector I have is doing some funny things. Any help would be appreciated. When I plug the surge protector into a ...
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0answers
34 views

Computer power supply fault

This is my first post to the site; it's been a great resource to me in both my professional and personal lives. It's about time I registered! So I went to boot up my desktop this morning and nothing ...
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1answer
30 views

Overloaded UPS, might it have damaged connected hardware?

I have an APC Back-UPS ES 400, and during a brief power failure (less than a minute), its buzzer sounded continuously. Looking up the manual, this apparently indicates an overload. It's rated to 240W, ...
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0answers
18 views

PC Won't Sustain Power

I've been using this system almost every day for the past 7 months. It has worked completely fine with no indication of error at all, but now it will not power on. Whether I use the casr button, the ...
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2answers
72 views

PC reboot at boot time [closed]

My PC keep rebooting every time I try to boot on my HDD. No BSOD, nothing. It just shut then reboot. I can go into bios and change setting, restore default setting or whatever. Nothing work. I have ...
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1answer
66 views

I'm in the US and computer only works when power supply is in 230V position. How do I diagnose this?

So, I replaced a computer PSU about six months ago. And, the computer power down intermittently. I've found: it's not over heating. Monitor shows it running cool. it's not graphics related. ...
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2answers
42 views

Does an INTERNAL USB hub affect performance?

I searched a little bit on the subject, but I couldn't find any clear answers, so I'm asking this question: Will the performance of a USB hub connected directly to the motherboard be shared between ...
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0answers
40 views

Power supply needed? can I use the same size because old one is near end of life or do I need a larger one [closed]

Symptoms, my computer when it gets going the power will just cut, the power indicator stays lit but everything else dies, all the fans, the screens go dead it does not respond on the network (ssh ...
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0answers
22 views

How to reduce number of wakeups/seconds due to timers?

I'm trying to reduce power consumption on one of my server. The machine is idle a lot of the time. I have monitored the number of wakeups/seconds with powertop and I see something strange: Summary: ...
2
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2answers
47 views

Is it not unsafe for a laptop to hibernate/suspend while an SD card is mounted?

I have been witnessing for years my Dell laptop freezes as it resumes from hibernating while an SD card is inserted in the slot and mounted. It of course took me some time to figure that out, but I ...
0
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1answer
83 views

How to know how much electric power a laptop is consuming?

On a laptop charger adapter it is written '65 Watt'. When I am using that laptop plugged into an AC socket, does it mean that it consumes 65 watt per second? I think it actually depends on usage. ...
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2answers
119 views

How many HDD's off 1 Molex? PICOPSU

First question here. I saw some posts about powering 2 HDD's from one molex, but I want to power 3-4 drives. I want to use a single molex and use splitters for the rest of the drives. Below is an ...
0
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1answer
83 views

ALFA AWUS036NH TX power vs USB current usage

I have ALFA AWUS036NH network adapter on raspberry pi model 2B running the latest raspbian. ALFA AWUS036NH should be capable of delivering up to 2W of power according to specs. Following some ...
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0answers
80 views

Battery does not resume charging after power interruption, if brand new HP Envy notebook is powered off

I got this laptop just yesterday, and I have a weird problem. Configuration of laptop: CPU: Intel Core i7 5500U @ 2.4GHz (Turbo 3.0 GHz). CPU: Nvidia GeForce GTX 850M (4GB dedicated). RAM: 8GB ...
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1answer
18 views

wireless router power adapter replacement 0.5a vs 0.6a

i have a wireless router with no power adapter, it needs a 9 volts 0.6 amperes adapter but i only have 9 volts 0.5 amperes power adapter. Will 9 volts 0.5 amperes power adapter damage my wireless ...
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0answers
35 views

ASUS monitor turns off, replacing the power cord works for a while then it happens again

My ASUS monitor is turning off a couple of times a day and is unable to be turned back on. I discovered that replacing the power cord allows it to turn on again, and in fact if I just plug in another ...
0
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0answers
15 views

Power plan switching brokes

I have ASUS U36S notebook and sometimes everything works fine. But sometimes power plan switching stop working. So for example CPU speed fixes on 34% of normal and I can't change it. This can be ...
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2answers
77 views

Acer Aspire V7 - Power Button and Lid Closed

I want to use my laptop with the lid closed with external screen, keyboard and mouse. I would like to turn on or take out of sleep/hibernation but the machine not allow this as long as the lid is ...
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2answers
53 views

How well is computer hardware protected from sudden power loss? [closed]

I always wondered how well the computer components can handle sudden power outages due to janitor accidentally pulling the power cord, whole city block power outage or power generator failure. Are ...
2
votes
1answer
47 views

How to put Windows Server into something like “Standby mode” so I can safely pull the plug off of it?

I have an interesting problem - we are going to test our UPS backup system by pulling the plug in our server room for a short time. Ideally the UPS will kick in and nothing interesting will happen, ...
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1answer
50 views

should I remove an old laptop battery to save energy?

Does the old battery of an old laptop use a lot of energy when the laptop is connected to AC? Does the power supply waste electricity trying to continually charge an old battery? If I remove the ...
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3answers
63 views

Is it ok if I charge my IPad with the power adapter that I use for my Samsung Tablet?

My iPad version details are as follows: Model A1460 Complies with the Canadian ICES-003 Class B specifications FCC ID: BCGA1460 and IC: 579C-A1460 Serial: DMPKF3F4F18Y There is something wrong ...
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1answer
89 views

Windows Power Options - Turn off the display - HDMI not saving energy

I recently purchased a BenQ GL2760H Monitor which has both HDMI/VGA/DVI inputs. I have a Dell Desktop with Window 7 which has a built-in Intel graphics card with just HDMI and VGA outputs. I also ...
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1answer
90 views

How transmit power affects power consumption of Wi-Fi router?

I wonder how Transmit Power affects power consumption and heating of my home wireless router. Below you can see a screenshot from router control panel. I can easily set it to 50% and on Windows 8 ...
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1answer
30 views

How to format the size of multiple link images in a power point simultaneous (2007)?

I've a powerpoint with one link image on each slide. I must update these images regularly but when I do, the size format of each link image changes. Can someone tell me, without using a macro, a ...