All Questions
Tagged with power-supply laptop
430
questions
0
votes
1
answer
413
views
How to know if the computer is getting enough power?
I have a UPS (650VA) and connected few devices including a laptop to it. I need to know is there a software or any tool or any way that I can know the devices are getting enough power? And also is ...
- 3
0
votes
1
answer
1k
views
gpu-z 2.43.0 is showing 8-pin #1 voltage as 20.4 V for Nvidia GeForce RTX 3060. is it normal?
gpu-z 2.43.0 is showing 8-pin #1 voltage as 20.4 V for Nvidia GeForce RTX 3060 6GB version. I use the gpu in my LENOVO LEGION 5 PRO -- 82JQ0062IN -- laptop. i thought the voltage should be 12 volts....
0
votes
0
answers
62
views
ASUS Laptop Screen Hertz Issue
I currently have an issue with my ASUS laptop.
When the power is unplugged the screen refresh rate drops down to 48 hertz from 120 hertz
This caused the screen to glich and cut in half so that the ...
- 101
1
vote
1
answer
449
views
Can I use Desktop's DVD writer on laptop via sata data connection, powering it with SMPS externally
Can I use Desktop's DVD writer on laptop via sata data connection, powering it with SMPS externally (SMPS of desktop)?
I mean power supply to Desktop's DVD writer will be done though Desktop's SMPS ...
- 51
0
votes
2
answers
786
views
Why do laptops need a higher voltage than desktops? Also, what form factor do laptops use?
Why do laptops need 19V whilst desktops need 12V? If no parts use 19V in a laptop, then what is/are the voltage(s) for the components that are typically 12V in a desktop? (e.g. fans, disks, DVD drives,...
- 31
0
votes
0
answers
39
views
Laptop micro freezes while not on external PSU
Hello I have been having this weird issue
My laptop while not connected to a PSU will experience weird micro freezes where my pc will simply freeze for a few seconds this issue will not accrue in any ...
- 1
3
votes
0
answers
138
views
Laptop always turns itself on again
Since yesterday my Laptop won't turn off anymore. When I shut it down, it takes a few seconds and then it turns itself on again. Doesn't matter if I let it boot and shutdown again, or turn it of in ...
- 423
0
votes
1
answer
2k
views
Do laptop chargers still consume electricity when the laptop is turned off (shut down) and the charger is plugged in [duplicate]
I tend to forget that I am charging my laptop when I turn it off and leave it overnight charging, even though it is turned off. I'm wondering, does it still consume electricity?
-1
votes
1
answer
496
views
Using 7A power cord on 10A laptop
Does using a 7A power cord on a laptop that needs 10A damage components or mess something up? I know I need a new one but I have already used the old power cord. This laptop is a Compaq Armada 1500 ...
- 147
1
vote
0
answers
541
views
Why are most laptops double-insulated while desktop PC's aren't?
As the title suggests, I'm curious why double insulation isn't considered an important factor when building a PC. I know most PSU's feature a third-prong for ground connection to avoid electrical ...
- 11
1
vote
1
answer
1k
views
Can i use 19.5V 4.62A charger for a 19V 2A laptop? [duplicate]
I have an old netbook that requires 19V and 2A charger. I found one charger of 19.5V and 4.62A in the garage. I connected it and it is working. Is it ok to use it like that or will it cause damage in ...
1
vote
3
answers
338
views
Battery hiding A/C input? Laptop on battery either not charging OR runs on power without battery (tp x230)
I have an eld Thinkpad x230 running linux/windows dual boot as a kitchen computer and it has been working fine for a good while. Sometimes I take it with me as a small computer and battery would hold ...
- 1,938
0
votes
0
answers
2k
views
Power consumption: laptop in sleep mode
I found out there's a post calculating the power consumption cost, which tested on a PC. However, I haven't found any data that is related to laptops, or any software to test the power consumption. If ...
- 101
2
votes
2
answers
2k
views
What would a laptop's reaction be to getting 5V fed into its 20V DC barrel charge port?
Background:
Hello. I am an Electronics Engineering student, and while I am familiar with basic power concepts and power circuits, I don't know how laptops are generally built and I want to cross check ...
- 153
0
votes
0
answers
583
views
Is It possible to use a 5V/3A power supply to only power a PD USB Type C Hub and not the laptop?
Situation: I require a powered USB hub because I need to expand a Thunderbolt/USB 3.0 Type C port to a few USB 3.0 Type A ports for a few portable hard drives.
Problem: It is almost impossible to find ...
- 135
0
votes
1
answer
81
views
Can switching power settings on a laptop during an update affect the battery?
I recently had to move my laptop, and it started some planned updates as I was shutting it down. Being in a hurry, I unplugged the power cable and packed it, figuring that the laptop would just finish ...
- 101
0
votes
2
answers
431
views
Is a laptop batery some kind of uninterrupted power supply for a laptop system
I preferred using my laptop on AC{Battery Unplugged} because the System suggested that performance is better while on AC{unplugged battery} than when on DC, So i decided to remove the battery and use ...
- 261
0
votes
1
answer
451
views
HP-au123cl laptop is buzzing when charger is plugged in
I have a 4 y.o. HP-au123cl laptop running Windows 10 that started making a buzzing noise a couple of days ago when power adapter gets plugged in. If I unplug the adaptor and plug back in, noise stops. ...
- 1
0
votes
1
answer
63
views
Laptop doesn't start after being shutdown for a couple of hours except when connected to power
I'm using an HP Compaq 6530b laptop and for a year or more now, my laptop doesn't start after it has been shut down, hibernated, or even after removing the battery for a few hours, and only happens ...
3
votes
2
answers
6k
views
Is it possible to charge a laptop via a USB-C-to-DC adapter plug?
I own a Acer laptop from 2017, which came with a brick-sized 19V/3,42A power supply that's connected via a 5.5/2.5mm DC plug. Although the laptop features a USB-C port, it unfortunately doesn't ...
- 310
0
votes
1
answer
228
views
Why does one 500W GPU run on a 220W supply while another does not?
I have a GTX[0] 1070(500W) working on a Dell[1] Power Supply (apparently 220W).
Another GPU with the same power specs is not working: GTX[3] 1080 (500W) returns NVRM: GPU 0000:05:00.0: GPU does not ...
- 171
1
vote
1
answer
3k
views
How can I know if my laptop is getting enough power?
I have removed my laptop’s battery because it was swelling up and damaging other components of the laptop.
I am running my laptop directly through power adapter. I have connected my power adapter in a ...
0
votes
1
answer
287
views
My laptop shuts down unexpectedly (no BSOD) when i unplug it from wall power, and battery seems like it's dying
My Asus vivobook X540UA (windows 10) suddenly shuts down without warning (no BSOD) when I unplug it from wall power, however I can still use the battery if I turn it on while it's unplugged - but then ...
- 1
0
votes
1
answer
4k
views
Safe to connect self-powered USB hub to a docking station?
I have a StarTech Thunderbolt 3 Dual-4K Docking Station (https://www.startech.com/en-us/cards-adapters/tb3dkdpmaw). It connects to my 2019 16" Macbook Pro via a Thunderbolt 3 host port. The ...
- 103
1
vote
3
answers
2k
views
Laptop charges intermittently
My Lenovo Z-series 51-70 laptop doesn't charge the battery all the time (sometimes it does, sometimes it does not). After long periods of leaving it unplugged and turning the laptop completely off, it ...
- 111
0
votes
2
answers
385
views
GPU being 'ejected' as soon as game launches
Issues are very similar to this and this . Note that is an external GPU setup , not a discreet laptop GPU.
I can start the laptop with the card connected and it immediately outputs through the card, ...
- 77
0
votes
2
answers
196
views
Battery charging on and off, should I replace battery or AC adapter power supply?
Situation:
I have a Lenovo G40-70. Windows 10 Home. I bought it as new in 2017; I keep it running 24-7. The problems started with the battery not charging. I disconnected it for the night, leaving the ...
- 69
1
vote
1
answer
6k
views
Is it dangerous to charge a laptop via an external charger and a docking station?
If this is not the right place for this question, sorry and please direct me to the right place!
I have a Dell Precision 5540 laptop, which has a 130W AC Adapter.
Input = 100-240v~1.8A 50-60Hz
Output =...
- 133
0
votes
0
answers
1k
views
Reduce CPU and GPU Power Consumption
I have a gaming laptop (i5-10300H and RTX2060 - Intel Gateway Creator Series), and as expected, it has sub-par battery life, especially because it is so powerful. However, I don't need this power all ...
0
votes
1
answer
514
views
Laptop shuts down without warning when on battery irrespective of OS
I have an HP laptop with Ubuntu 18.04 and Windows 10 both installed in dual boot mode. When I'm working on the laptop with battery power, the laptop shuts down without any warning irrespective of the ...
- 1