All Questions
Tagged with power-supply laptop
430
questions
3
votes
1
answer
15k
views
Melting plastic around DC-in jack in laptop
I recently noticed that the plastic around the DC-in jack of my laptop was warped (melted) a little bit. Since I noticed, I have done some experiments, and saw that the metal tip of the charger heats ...
- 1,597
3
votes
5
answers
90k
views
How to test AC adapter?
I have a Toshiba laptop that is no longer receiving power when it's plugged in. How can I tell if problem is in the AC adapter or in the actual laptop?
I could buy a replacement adapter (this is the ...
- 133
3
votes
1
answer
934
views
Laptop always plugged to charger: how to properly keep the battery's lifespan
I provided my HP Probook laptop with a 9 cell 6900 mAh battery, which obviously gave good autonomy. I always keep it plugged in to the charger.
I noticed (and I guess that is due an embedded ...
- 43
3
votes
2
answers
6k
views
Static electricity - Our computers were covered with black trash bags for about six months, is that bad?
A laptop and two desktops have been covered with big trash bags to protect them from dust for quite some time. Is there any danger of anything getting damaged from static electricity?
Is there ...
- 31
3
votes
1
answer
11k
views
What purpose has this tiny clip on my power cable?
With the Asus N550J I bought, I received an adapter which has a tiny clip attached to it:
As it seems, the exact same cable fits perfectly in that clip, as shown below:
On this page some usages are ...
- 123
3
votes
1
answer
64k
views
How can I determine how many amps I need to power my laptop?
I'm doing a show in an exhibit hall and will be using my laptop with a credit card reader. I need to order my power connection and my choices are: 5 amps; 10 amps; 15 amps, or 20 amps (all at 110V).
...
- 31
3
votes
3
answers
56k
views
Dell laptop battery not charging?
I have a Dell Vostro 3555 and recently I noticed that my battery is not charging at all. I see this message when I boot up the computer:
The AC power adapter type cannot be determined. You system ...
- 3,881
3
votes
2
answers
21k
views
Laptop does not turn on unless plugged in; battery works after powering on
I have a Dell Latitude D630 Laptop, which will only power up when the power adapter is plugged in. It will not power up on battery only. Once powered up I can unplug the adapter and it will run on the ...
- 33
3
votes
2
answers
706
views
Laptop turns off suddenly, then wont turn on again
This laptop started to present this problem in which it turns on briefly for about one minute, then it suddenly turns off and after that wont turn on again. If I wait about one month or so and try ...
- 31
3
votes
1
answer
331
views
AC power and battery conflict
I have an issue with my ac power and battery working together.
When my laptop is without a battery, it runs off the AC power cord fine.
When I attempt to insert the battery it stops running of the AC; ...
- 141
3
votes
2
answers
39k
views
Can a faulty battery cause my laptop to shutdown even on AC line? (battery installed AND plugged in together)
Until recently, I experience something rather annoying (and troublesome) with my laptop. It spontaneously shuts down itself without any warning, it restarts. No blue screen, no hanging program, just ...
- 193
3
votes
0
answers
141
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
3
votes
0
answers
169
views
Laptop adds harsh noise to sound playback while running on battery
I've looked at what others have said to those who asked with similar problems, and it seems to be a power supply issue. The louder the sound I'm trying to listen to is, or the higher the volume, the ...
- 31
3
votes
0
answers
264
views
Laptop died after using a SATA/IDE USB hard drive converter
So I think I have done something very bad, I have a HP laptop and wanted to recover some data from some old SATA and IDE drives.
I Bought this http://www.amazon.co.uk/gp/product/B00VR52ZZ0?psc=1&...
- 31
3
votes
1
answer
356
views
Laptop is not turning on with working charger
When I am connecting the charger to the laptop, the laptop is not charging (LED light is not on) and LED on the adapter/charger also turning off. I don't know what could be the problem?
Things I ...
- 31
2
votes
4
answers
580
views
Is it dangerous for a note/netbook computer to be plugged directly to current?
I have an acer aspire one d255.
Would it be dangerous to use when plugged directly to current, without a voltage regulator. Also, is there a benefit in using the battery when plugged?
Let's consider ...
- 622
2
votes
4
answers
4k
views
Will an Australian power adapter with an American plug charge a Laptop safely?
A friend of mine has a laptop that she brought from Egypt to America, and she is afraid to charge it.
She told me the laptop was purchased in Australia and it has a plug like this:
And the other ...
- 22.7k
2
votes
3
answers
2k
views
Can using a under powered laptop charger make my notebook shut down under heavy load?
I have a XMG P501 gaming laptop based on Clevo P150HM models at the moment connected to an under powered laptop charger. It is shutting down when under heavy load (3dmark, some games in particular) ...
- 33
2
votes
2
answers
4k
views
Same voltage, different amperage for two power supplies
I've just plugged an 18.5V 6.4A HP power supply into an HP laptop; I normally use an 18.5V 3.5A power supply. Since the connector fit, I figured I'd give it a go... so far no funny smells or fires.
...
- 81
2
votes
4
answers
422
views
Laptop not being powered on
My laptop has had a problem recently. When I flicked the power button on, it won't come on, the lights won't get turned up, etc. I had checked the wiring connection and that had no problem. I had to ...
- 4,220
2
votes
2
answers
3k
views
Can you use USB-C in parallel to provide more power?
I am currently looking at eGPUs for my laptop (HP Spectre x360 15"). Because the standard power brick is rated for 150W, the USB-C standard would only provide 2/3 of the required power, so even an ...
- 188
2
votes
2
answers
5k
views
Melting/smoking universal AC adapter
I own a Samsung RV520 for 2 years now and 3 months ago my AC adapter stopped working and had to replaced. I went to the closest computer service and they gave me an universal AC adapter. Now, the new ...
- 21
2
votes
3
answers
2k
views
Dell Latitude not charging over USB-C PD 3.1 when powered on. It can charge, but only when I power it off
I have a somewhat weird problem where my Latitude 7300 won't charge over USB-C port when powered on with a specific non-Dell charger; I can charge the Latitude, but only when I power it off. The ...
- 41
2
votes
2
answers
7k
views
What Is the best way to connect or disconnect a Laptop from power? [closed]
While connecting/disconnecting laptop's power connector seems to be convenient, I am concerned about person's and laptop's safety of doing it this way.
Somewhere I read that connecting/disconnecting ...
- 5,894
2
votes
1
answer
2k
views
Power supply from laptop ozone smell
I have a laptop which gave a small "plof" sound, after that the laptop was totally dead.
The smell is like ozone, the same when a power-supply from a desktop computer stops working. This is new to me ...
- 1,123
2
votes
2
answers
35k
views
Is it possible to connect a 3.5" SATA drive to a 2.5" connector?
basically I'd like to connect a 3.5" SATA drive to the place were a 2.5" SATA drive would be in my laptop.
Here's a picture showing both kinds of drives by Dsimic:
I have been reading up on SATA ...
- 289
2
votes
2
answers
18k
views
Can low voltage damage laptop or it's battery?
Sometimes I get very low voltage in my house. I am worried if I connect my laptop charger to the socket, will it damage the charger, battery or the laptop itself?
- 139
2
votes
1
answer
875
views
How to boot computer after shutdown during updates?
I shut my computer down while doing updates in Windows Vista. Now it will not turn on, and I get no response when I hit the power button.
Do I have to take it to a professional?
- 21
2
votes
2
answers
211
views
Do any laptops exist with multiple power connectors?
Are any laptops available with multiple places a power cable could be plugged-in?
It would be very handy to have a connector on either side of the machine, and not just one (for when the available ...
- 10.2k
2
votes
2
answers
926
views
How to replace a laptop's battery without shutting down?
Background information: I take my laptop to three classes in one day every week where I don't have access to a power socket to charge my laptop, but I have an extra laptop battery fully charged in my ...
- 121
2
votes
1
answer
6k
views
Laptop power supply unit compared to PC power supply unit
PC power supplies are relatively huge compared to those used with laptops.
But why is this so when a laptop today can have an equal level of performance as a high end PC?
Are they both switching ...
- 145
2
votes
1
answer
2k
views
What determines the speed at which a laptop battery charges?
What factors affect the charge time of laptop batteries? Is it the laptop's use while charging? The age of the battery? The charger's wattage?
- 13.4k
2
votes
1
answer
431
views
USB HUB buzzing noise when power connected to same charger as laptop
My laptop is powered using a 3rd party GaN charger which provide 2 more (typec-max65w, typea-max18w) charge ports for convenience. I have a usb3.1g2 hub connect to my laptop's dedicated type-C port. ...
2
votes
1
answer
150
views
Lenovo charging issue - help needed regarding the recently purchased charger
I've got a Lenovo Ideapad 100S-11BY, Modal: 80R2 Laptop
I just recently bought this charger for it - Charging Device Listing
When I plug in the charger into the laptops charging port, after about 10 ...
- 185
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
2
votes
1
answer
232
views
Powershell - When removing AC power value is not changed
I'm trying to make a script that changes Windows power plans depending if the battery is plugged or not. I tried an infinite loop which is constantly checking on the battery status, variable "$...
- 21
2
votes
1
answer
516
views
Windows: Screen turns off and on again every time I plug in my power cord
I am having a lenovo X1 running window 10. As mentioned in the title, every time when I plug in my power cord or remove it, my laptop monitor turns off and on. I tried having the power and brightness ...
- 83
2
votes
2
answers
2k
views
How do laptop batteries and chargers communicate with the laptop and what do they 'say'?
I have an HP laptop that does not like its new after-market battery (original parts are no longer in production). I am having a curious problem in that when the battery finishes charging, that if the ...
- 708
2
votes
1
answer
268
views
Thinkpad X32 can't start on only battery
I've got a ThinkPad X32 that won't launch from just the battery, but will work if the AC adapter (or second battery from dock) is present; After launching the laptop, i can remove the external power ...
- 71
2
votes
1
answer
1k
views
Laptop only turning on when pressure is applied
I'm trying to help a friend fix their Toshiba Satellite A665 because its been shutting itself off at random times until it got so bad that it doesn't make it past the BIOS screen before shutting off ...
- 47
2
votes
1
answer
941
views
Debugging a laptop that won't turn on
When laptop won't turn on, how do I figure out which of these issues might it be?
Power Button
The AC plug
The Motherboard
Are there some tools or ways to debug and narrow down the cause. And how ...
- 691
2
votes
2
answers
5k
views
Dell inspiron n5010 has failed to recognize AC adapter
Recently my dell inspiron n5010 has failed to recognize my 90W adapter (despite powering it just fine).
Full error message:
"The AC power adapter wattage and type cannot be determined.
the ...
- 21
2
votes
0
answers
110
views
Laptop shuts down shortly after boot up
I have an Acer Aspire laptop running Windows 10, and after boot up, it just turns off (as if the power was cut). This happens regardless of power supply (plugged in, battery in or out, power ...
- 1,256
2
votes
0
answers
324
views
Laptop GPU Performance Low When On AC Power
HP ZBook G3 Mobile Workstation
Core i7
Nvidia Quadro M2000M
150W AC adapter
Windows 10
When this laptop is plugged in on AC power the 3D performance is dramatically worse than when running on ...
- 21
2
votes
1
answer
617
views
Laptop powers off when unplugged after replacing hard drive, but system still detects battery
I have performed HDD swap for new SSD on my Acer Aspire ES1-311 laptop.
During disassembly I disconnected the battery by pushing button directly on my mobo and then unplugged the cables from the ...
2
votes
1
answer
2k
views
What would happen if someone connected the output of a USB Charger/Power bank to a USB port on a laptop/PC?
I have a cooling pad that uses a type-A USB for power, it comes with a Type-A usb to another type-A USB cable. And since I use a power bank to power the fans since I don't want to drain the battery ...
- 225
2
votes
0
answers
6k
views
Can I charge my 19.5 V laptop with a 19V power bank?
I have a laptop of which the regular power supply provides 19.5V at 3.34A.
I am thinking about buying an external power bank that I can choose between 19 or 20 V.
Would this be safe to use?
Should I ...
- 21
2
votes
0
answers
1k
views
My battery stops charging randomly and then loses power
I have a Lenovo E540 running Windows 10 x64. For quite a while now, I've been having problems with how the battery charges.
When I plug it in, it will always start charging - maybe for only 30 ...
- 781
2
votes
0
answers
11k
views
Laptop stops and starts charging randomly
I have an ASUS laptop and it randomly starts and stops charging without moving the cables. The battery is brand new and seems to be working fine. The DC Adapter is professionally tested and seems to ...
- 407
2
votes
1
answer
164
views
Laptop Power Supply with detachable cables
I have an Acer laptop which gets a lot of use. The problem is the charger. Due to wear and tear the cable has split (see photo). I could easily get a replacement power supply, but I'm wondering if ...
