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

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119 views

Will I damage the laptop if I always use a travel adapter to charge it? [closed]

This scenario could happen if I bought a laptop in one country but later moved to live in another country with a different power standard. Will it be safe to just add a travel adapter on the plug and ...
2
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1answer
209 views

Unplugging power cord and holding the power button. PC won't turn on

Okay so I attempted to fix a Windows 10 usb problem by following a month old forum. The instructions were: Unplug the power cord from desktop computer. Hold in the on/off button for approx. 10 ...
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0answers
38 views

Monitor turns off after a few seconds - both monitors

Running into a weird issue - my second monitor started turning off after a few seconds today. I power off and back on, and it immediately powers off again after a few seconds. I tried a spare monitor ...
2
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0answers
313 views

Won't boot after inserting new RAM sticks

I bought a new pair of 4gb RAM sticks today. Thinking it'd be easy to install, I powered down, slapped them in and powered on. It wouldn't boot. Fans spin up, a couple of seconds pass then it powers ...
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1answer
51 views

Power button triggers a ctrl+alt+deleter screen

I have looked up for a solution on several forums but can't find it, hope I didn't miss it ! I have a laptop and I am used to turn it into sleeping mode by pressing the physical power button that is ...
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1answer
3k views

Where are the power switch pins?

I’m custom building a PC. I’m using an MSI Z97 PC Mate motherboard. The big power supply is an EVGA 430W. It’s all plugged in, and I hit the switch but it doesn’t do anything. Both JPWR 1 and 2 are ...
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1answer
367 views

Does changing the screen resolution affect power consumption?

If I have two identical monitors and have set one to display in high resolution and the other to display in low resolution will there be any difference in power consumption? Note that this question ...
0
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1answer
40 views

How to tell whether my device has gone in to suspend

I've recently been given a new work laptop and have installed Fedora 22 on it, when I have suspended it recently it has woken up and I'm pretty sure the battery has drained massively while it should ...
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0answers
12 views

HP desktop (XP era) only turning on with power button pressed and unattaching

I got an old XP era Desktop from HP. I've added a HDD, but for the new HDD I needed to unplug the power button or actually all motherboard stuff, also the front was deattached. Because I wanted it to ...
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1answer
125 views

Windows 10 - Computer will not enter reduced power mode

This has been asked before in the form of "Windows X won't sleep", and I've unsuccessfully followed all of the prescribed diagnostic steps everywhere I can find. Some time, about 2 weeks ago, my ...
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2answers
2k views

Will stopping hard disk when inactive also stop downloads?

If I enable to turn off hard disk when inactive in Windows Power Plan - Advanced Settings, will it also stop my downloads in different programs? Currently my Internet connection is slow.
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0answers
17 views

Thunderbolt to DisplayPort, how much current?

I want to feed an embedded DisplayPort LCD using the signal coming from a Thunderbolt source. I know that eDP is very similar to DP except that it has also to supply the power for the LED backlight ...
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1answer
75 views

Does Laptop power supply matter? [duplicate]

I have a power supply which is 19.5V and 6.15A. My friends power supply or laptop probably broke and his power supply has a 19V and 6.32A. His charger comes with an adapter which fits my plug ...
0
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1answer
115 views

Understanding Meaning of Power Indicator Blinks for Gigabyte GA-B85-HD3 Motherboard

I've bought a new desktop computer few days ago. It has the following hardware specification: Gigabyte GA-B85-HD3 motherboard Intel Core i-5 4460 Processor 8 GB DDR3 RAM 1 TB Hard disk Windows 10 ...
0
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1answer
128 views

Any easy way to combine (any) laptop charger with USB charger

I have a shitty laptop with only one USB 3.0 port and not enough power on that port to charge anything any fast. There are a lot of cheap USB 3.0 hubs on the market that support external power. What ...
2
votes
1answer
83 views

UPS doesn't work on off-grid solar power system

My APC 350 UPS worked fine when plugged into standard utility company power in the States. Now it's being powered by an off-grid solar power system in Central America, using 120 volt power from a ...
0
votes
1answer
83 views

Is it possible to use a UPS or power inverter in place of a dying battery in a laptop?

My battery is dying and I can’t buy the a new battery because its not available in my country (India). My battery model is A41-X550E (ASUS). And it’s inside my laptop like this: So that’s why I ...
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0answers
14 views

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 ...
0
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1answer
155 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 ...
0
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3answers
62 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 ...
0
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2answers
339 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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1answer
56 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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1answer
41 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, I'...
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1answer
240 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 ...
2
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1answer
1k 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 ...
0
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1answer
18 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. ...
6
votes
1answer
1k 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
50 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 way I can use to simulate AC Charger connected to my laptop without actually connecting the charger. My laptop's Display Power Saving Tech requires AC connection to work ...
2
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1answer
149 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 ...
0
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1answer
56 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 ...
0
votes
1answer
170 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 ...
0
votes
1answer
64 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, ...
0
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0answers
57 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). http://...
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1answer
39 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
75 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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1answer
92 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, ...
2
votes
1answer
198 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
60 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 ...
0
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1answer
66 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
35 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 ...
0
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2answers
98 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 ...
1
vote
1answer
213 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. ...
4
votes
2answers
84 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 ...
1
vote
0answers
50 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 ...
2
votes
2answers
111 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
votes
1answer
3k 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
884 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
votes
1answer
445 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
300 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 DDR3L....
1
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1answer
56 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 ...