You plug your laptop in, but the battery icon will not budge, or it says "plugged in, not charging". It is a worrying moment, because you do not know whether you are looking at a cheap cable or an expensive repair. The sensible approach is to work through the causes from the simplest and cheapest to the more involved. Here is that order, plus one warning sign you must never ignore.
Start with the obvious, because it often is
Before assuming the worst, rule out the easy things. They account for a surprising share of "not charging" problems.
- The wall socket. Try a different socket, and check it is switched on. Plug something else in to confirm the socket works.
- The cable and connections. Make sure the cable is firmly seated at both the wall and the laptop. Charger cables, especially the thin one near the plug, get bent and break inside over time. Check along its length for kinks or damage.
- The adapter block. Many adapters have a small light. If it is off, the adapter may not be getting power or may have failed. If the cable is in two parts, make sure they are clicked together properly.
- A full reset. Shut down, unplug everything, wait a minute, then plug the charger in and try again. This clears the occasional temporary glitch.
Check the charging port
The port where the charger plugs into the laptop takes daily wear, and it is a common failure point. Look and feel for these:
- Does the connector feel loose or wobbly in the port?
- Does it only charge if you hold the cable at a certain angle?
- Is there dust or lint packed into the port? A gentle clear with the laptop off can help.
- Does the port look pushed in, cracked or burnt?
A loose or damaged port often means the connection inside has worked loose from the board. That is a repair rather than a part you swap at home, but it is usually very fixable.
Consider the battery's health
Laptop batteries wear out. They are made to handle a few years of daily charging, and after that they hold less and less. A worn battery might charge slowly, stop at a percentage and not climb, or report "plugged in, not charging" because the system is managing a tired cell. On Windows you can generate a battery report to see how much capacity is left compared to when it was new, which tells you whether the battery is simply old. A battery that has aged out is a straightforward replacement.
Is it the adapter itself?
Adapters fail more often than people think, and a dead adapter looks exactly like a dead laptop. If you can safely borrow a compatible charger, the correct type and power rating for your model, and the laptop charges with it, you have found your culprit. Using the wrong wattage adapter can also cause "not charging" even when it powers the laptop, so match the original specification.
Battery, port or board: telling them apart
| Likely the battery | Likely the port | Likely the board or adapter |
|---|---|---|
| Charges slowly or stops at a set percentage | Only charges at a certain angle | No sign of power at all with a known-good charger |
| Battery is several years old | Connector feels loose or wobbly | Adapter light is off or flickering |
| Battery report shows low capacity | Works briefly then drops out | Charges with a different adapter (then it was the adapter) |
Some "not charging" faults trace to the charging circuit on the mainboard rather than the battery or port. That needs proper testing to confirm, because the symptoms overlap, and guessing at parts gets expensive.
The one warning sign to never ignore: a swollen battery
If the laptop feels like it is bulging, the casing is splitting open, the trackpad is lifting, or the base no longer sits flat, the battery may be swollen. A swollen lithium battery is a safety hazard. Stop using the laptop, do not charge it, and do not press on the battery. Avoid puncturing it, keep it away from heat, and have it removed and replaced safely. This is not a wait-and-see situation, it needs attention promptly.
Repair or replace?
Most charging faults, a new battery, a port repair, a replacement adapter, are inexpensive relative to the laptop, so fixing them is usually well worth it. If the laptop is older and the fault turns out to be on the board, it is worth weighing the cost against a replacement, which our honest guide on whether to repair or replace your laptop walks through without the sales pressure.
When to bring it in
If you have checked the socket, cable, adapter and port and your laptop still will not charge, or if you suspect a swollen battery, let us test it. We can measure exactly where the power stops, whether it is the battery, the port or the charging circuit, and quote you before any work. See what our computer repairs cover.
We have sorted charging faults on every brand of laptop you can think of here on the South Coast since 2010. Call 039 314 4359 to talk it through, or book a repair and we will take a look.
