Solved: ac adapter

The essential part of a máy tính that makes it portable is the rechargeable battery. Batteries have given devices the much-needed freedom of movement that humanity craves. However, you will need an AC adapter in order to lớn charge your máy tính battery. For Dell users, charging their batteries has somewhat been a problem. There is a particular issue that has been bothering several users; as far bachồng as 2005. When the charger is plugged in and the PC is booted up, the user gets an error in a blachồng screen stating “The AC power adapter type cannot be determined”. A variation of this message says “The AC power adapter type và wattage cannot be determined”.

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The AC power adapter type cannot be determined

The computer will then state the wattage of the adapter you need e.g. ‘Please plug in a 130W adapter’. The user has an option to ignore this message và complete the boot by pressing F1. This error also occurs when you have sầu fully started your PC and logged in. when you plug in your charger at this point, a notification message comes up in the system tray stating that the AC power adapter type could not be determined. In both cases, your battery will not charge & you will not see any indication on the system tray that the charger is plugged in. This article explores this problem và gives you the remedies khổng lồ it.

Why your AC power adapter type cannot be determined?

As the error says, this means your PC cannot identify the charger you plugged in. The power connector consists of 3 pins, 2 are power & earth, the 3rd is a signal line lớn identify the PSU as a compatible (Dell) unit. If the Laptop does not get the signal, it does not allow the PSU to charge the battery, it will, however, allow it to lớn power the máy vi tính. This will protect the battery from high currents if the wattage of the charger is higher than the OEM specification. If you choose to lớn ignore this message, the system performance will go down, and you will notice that your processor cloông xã speed has been halved.

This problem can be caused by using the wrong charger. It can also be caused when the data connection for charger identification is broken; it could be due to a problem in the charger (cable, plug or central pin) or in the máy tính xách tay (power đầu vào port or motherboard). While trying a new adapter is a good idea, changing the battery is not. This error is not caused by the battery in any way. In fact, you will get the same error if you just plug in the adapter without the battery.


If you have sầu a charger that has been working before, then vày not worry. The fault is a comtháng one và happens because the plug sits so proud from the side of the máy tính xách tay that it constantly gets knocked and causes the connector on the power board to lớn fail; most commonly open circuiting the signal line. Wriggling it around might solve sầu the issue but temporary. It is a matter of time before your charger will need you khổng lồ plug it in in an awkward angle for it khổng lồ work. Eventually, it will stop working all in all.

You can know the source of your problem by trying your charger on a similar máy tính, or by plugging in a similar charger. If your charger works in another laptop or the new charger still shows the same error in your PC, then your problem is likely khổng lồ be the DC charging port in your máy tính, or a bad charging system on your motherboard. If another charger works on your PC or your charger shows the same error on another máy tính xách tay, then the problem is the charger. Below are the solutions to this problem.

nguồn cycle your PC

Completely discharging your PC might fix the unresponsive state of the charging system.

Unplug your charger, power off your laptop, & remove your batteryHold down the power button for at least 30 secondsPut the battery baông chồng in, with the charger & rebootChechồng if this fixed it

Workaround with ThrottleStop

There is a workaround you can try in order khổng lồ fix this issue. However, you will have sầu lớn use a tool named ThrottleStop. It’s a really lightweight tool that you can tải về for không tính phí. Here is the link. Once the program is downloaded, follow these steps:-

mở cửa ThrottleStop.Now unkiểm tra the option named “BD PROCHOT”.Enabling BD PROCHOTChechồng if the issue is resolved.

If it isn’t resolved you will have to vị these additional steps:-

Set the “Multiplier” khổng lồ “Max”.Set the “Speed Shift EP” to “1”.Chechồng if the issue is resolved.

Get a new AC adapter/Charger

If you have sầu tried troubleshooting & you have found that your charger does not work on a similar computer or a similar charger works on your PC, then it is time to lớn change your AC adapter. If you are sure your charger worked for an extended period before, then the problem could be anywhere. It could be loose soldering in the charger briông xã, a broken pin, fried capacitors, a broken connection, etc. If you think you can try repairing the charger (by changing cables, capacitors, soldering) then go ahead. In most cases, the charger cannot be salvaged & you will need to buy a new charger.

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Please note the wattage (e.g. 65W, 90W, 130W etc.) of your OEM charger, the voltage (12V, 19V) and charging current (1A, 2A, 4A). Make sure this numbers match with the new charger, otherwise you will get the same error.

Change your DC power jack

To be honest, Dell laptops come with some flimsy soldering và charging ports. I have sầu repaired a lot of Dell computers và I have been surprised how easily the soldering comes off, and the amount of DC charging ports I have sầu had to lớn replace. If you are the kind that will get the computer to charge by wiggling the charger around, then it is time to lớn change the DC charging port. Attempting a repair on the port is no good because you will need khổng lồ destroy the whole thing to lớn get lớn the solders.

The power board on some Inspiron models is a separate unit to the motherboard and has the power socket mounted directly on it. You can open your PC, unplug the charging port from the motherboard, và replace it with a new one. It will cost you a few dollars và you can get one from Amazon, eBay or from here (tìm kiếm for ‘DC power input’ or something similar). The local repair siêu thị might have one too. Make sure that the part numbers (e.g. DD0R03PB000 or DD0VM9P000) match or at least make sure that the wiring is the same and the units you are swapping are compatible.

If your máy tính xách tay DC đầu vào port is soldered onto lớn your motherboard. You will have to unsolder it & solder baông xã a new one. If the problem persists, then your motherboard might be the problem và will need replacement.

NB: You can get a direct/external battery charger if you can’t seem lớn find the problem. If your máy tính is still under warranty, it is recommended khổng lồ hotline your manufacturer; a repair will be made, or a replacement sent. Also, make sure that you plug in your charger directly inlớn the AC outlet/socket: power surge protectors & other power conditioning equipment can affect the sinusoidal nature of your supply & throw this error.

Disabling Power Warnings

If you are able to charge your computer normally but the warning keeps coming up, you can make the warnings go away permanently by changing the BIOS settings. Every máy vi tính has settings which determine whether the power warnings will show or not. In this solution, we will navigate to lớn your BIOS and disable the power warnings.

Note: This doesn’t mean that the issue you are facing will go away. We will be simply disabling the warnings.

Once in BIOS, go to lớn the Advanced tab and then toggle the option of Adapter warnings. This option may be present in another tab as well.Disabling Adapter WarningsSave sầu changes & exit. Restart your computer và the warning will be disappeared.
By Kevin ArrowsMarch 30, 2021
6 minutes read

Kevin Arrows

Network Team Lead/Manager (LAN/WAN) |
Kevin is a dynamic và self-motivated information giải pháp công nghệ professional, with a Thorough knowledge of all facets pertaining to lớn network infrastructure thiết kế, implementation & administration. Superior record of delivering simultaneous large-scale mission critical projects on time & under budget.

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Fix: The AC power adapter type cannot be determined

If the issue is with your Computer or a Laptop you should try using Restoro which can scan the repositories & replace corrupt and missing files. This works in most cases, where the issue is originated due khổng lồ a system corruption. You can download Restoro by clicking the Download button below.

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