Laptop won’t charge or hold a charge? Charger, port, or battery

A laptop that will not charge, or charges and then dies in an hour, has one of three problems: the charger, the port the charger plugs into, or the battery. People replace two or three chargers before finding out it was never the charger. Ten minutes at the kitchen table usually narrows it down, and it keeps you from paying for the wrong fix.

First, rule out the charger

• Look for a light on the charger brick or on the laptop next to the port. Plug into a different wall outlet. No light anywhere is a charger or outlet problem until proven otherwise.
• Run your fingers along the whole cord, especially where it meets the brick and the plug. A frayed or kinked cord behaves exactly like a dead port.
• If you can borrow the same charger from someone with the same laptop, try it. Do not try random chargers: a wrong-voltage brick can turn a cheap fix into an expensive one.
• USB-C laptop? Try a different cable before anything else. USB-C cables fail far more often than the ports do.

Then the port

• The classic port symptom: it only charges with the cord held at an angle, propped on a book, or pushed in just right. The light flickers on and off as you move it.
• Shine a flashlight into the port. Lint and crumbs pack into charging ports, laptop and phone alike, and stop the plug from seating. If you can see fuzz, that may be the whole problem; it gets cleaned out, not replaced.
• The plug feels loose or wobbly in the port, or the port moved when you tripped over the cord. That is the port, or the board it sits on.

Then the battery

• The laptop runs fine plugged in but dies fast, or instantly, when you unplug it. That is the battery.
• Windows says “plugged in, not charging,” or the battery sits at 0% or a fixed number forever. Usually the battery, occasionally the charger.
• The trackpad or keyboard has started to bulge, or the case no longer sits flat. That is a swollen battery. Stop using it now: unplug it, power it off, do not press on the bulge, and bring it in.
• On Windows you can print a battery report: search for Command Prompt, type powercfg /batteryreport, and open the file it names. If the full-charge capacity is a fraction of the design capacity, the battery is worn out. On a Mac, hold Option and click the battery icon to see its condition.

Port or battery: the tell

If charging depends on how the cord sits, it is the port. If charging works fine but the charge does not last, it is the battery. If it does both, it may be both, and that is worth knowing before you spend anything, because a laptop with a worn port and a dead battery gets a different conversation than one with a single fault.

Either way the repair is routine and usually far cheaper than a new laptop. We replace batteries for every brand on our laptop battery replacement page, and ports on laptops, phones and tablets on our charging port repair page. Both start with the $60 diagnostic, credited to the repair, and the part is quoted after the look because it depends on your exact model.

What not to do

• Do not keep jamming different chargers in, and do not buy a cheap no-name charger for a laptop you care about.
• Do not poke a metal pin into the port to clean it. A wooden toothpick, gently, is the most you should do at home.
• Do not run the battery flat and leave it. A dead battery and a dead port together make the diagnosis harder.
• Do not ignore a swollen battery because the laptop still works. It will not stay that way, and it should not be pressed on.

When to bring it in

When a different outlet and a careful look at the cord have not solved it, or the moment you see swelling. Bring the charger with you so we can test it with the one you actually use. For the flat $60 we test the charger, the port and the battery separately, tell you which one it is, and quote the repair before anything is ordered, with the $60 credited. Walk in Monday through Thursday, 9:00 to 5:30, or Friday by appointment, at 746 S Arnold St Suite 3, the black door with our logo on it, straight ahead when you pull in, up the steps. Or book a drop-off time online. Every price we publish is on our prices page.