A laptop may stop charging because of the outlet, charger, cable, battery, charging port, software, or temperature. Start with visible checks and stop if the battery or case appears unsafe.
Stop if the battery or case looks unsafe
Stop using the laptop if the case is bulging, the trackpad or keyboard is lifting, the battery area is unusually hot, or you notice smoke, leaking, or an unusual odor. Unplug it if that can be done safely.
Do not press on a swollen case, puncture a battery, or try to remove a built-in battery. Keep the device away from heat and ask the manufacturer or a qualified repair provider for safe handling guidance.
Check power without opening the computer
Try a known working wall outlet. Inspect the charger, cable, plug, and charging port for visible damage. Stop using a damaged cable or adapter.
Use the charger and cable specified for the laptop when possible. Some USB-C chargers and cables can connect physically but do not provide the power a laptop needs. Remove a dock or hub and connect the charger directly if the computer maker allows it.
Read the message before changing settings
Note whether the laptop says plugged in, not charging, slow charger, service recommended, or another message. Also note whether it runs from the charger but shuts down when unplugged.
Some computers pause charging before 100 percent to protect battery health. That is different from a battery that stays empty, drains while plugged in, or is not detected. Check the battery information provided by Windows, macOS, or the computer maker before changing battery settings.
Prepare for a charger, battery, or port check
The symptom alone may not show which part is responsible. The charger wattage, battery condition, port, and internal power system may need to be checked together.
Keep the correct charger with the laptop. If the port is loose, the case is damaged, or a replacement battery is internal, the work may require a repair specialist or manufacturer service.