Laptop keyboard keys not working? One key, a row, or all of them

A laptop keyboard rarely fails all at once. It is one key that needs a hard press, then a letter that types twice, then a row that does nothing. Which keys have gone, and how, tells you a lot about what is wrong and what it will cost. Here is how to read the pattern, what is safe to try at home, and how we think about whether a keyboard is worth replacing.

One key, or a few scattered keys

• Usually something under the key: a crumb, grit, a hair, or a dried drop of coffee. A few bursts of compressed air around the key, with the laptop tilted, clears a surprising number of these.
• A key that works with a firm press but not a light one has a worn switch or a tired rubber dome under it. That is the keyboard aging, and it tends to spread to its neighbors.
• A key that types twice, or types on its own, is the same wear, further along.
• Be careful prying keycaps. On most laptops the little plastic scissor clips under the cap break easily, and once they are broken the key does not go back.

A whole row, or a block of keys

Keys are wired in a grid, so when a whole row or column dies together, the problem is a trace in the keyboard or the ribbon cable connecting it to the board, not the individual keys. Air will not help. This is nearly always a keyboard replacement, or occasionally a cable that has worked loose, which the $60 look will find.

All the keys at once

A completely dead keyboard is the one case where software is a real suspect, so check these before assuming hardware:

• Plug in any USB keyboard. If it works, the laptop is fine and the fault is between the built-in keyboard and the board.
• Restart, and try typing at the password screen. If the keyboard works there but not inside Windows, a driver or an accessibility setting (Filter Keys is the usual one) is to blame, and it is fixable without a part.
• If the keyboard is dead everywhere, even before Windows starts, the keyboard, its cable, or the connector on the board has failed. The touchpad often goes with it, since on many laptops they share a cable.

If liquid was involved

Keys that stopped working after a drink went on the keyboard are a different problem. The keyboard is the least of it: liquid runs through the keyboard into the board underneath, and corrosion keeps spreading for days after it looks dry. Turn the laptop off, do not keep using it, and read our spill guide for what to do in the first hour. A sticky, half-working keyboard a week after a spill means the clock is already running.

The cost logic of a keyboard

Here is the honest part. On older laptops the keyboard is its own part that unclips from the top, and replacing it is a modest, straightforward job. On most laptops made in the last several years the keyboard is riveted into the top case, so the “keyboard” is really the whole palm rest, keyboard and touchpad as one assembly. The part costs more, the job takes longer, and on some models it is most of the way to a rebuild.

That is why we never quote a keyboard over the phone: the right number depends entirely on which laptop you have. We order keyboards and top cases for the exact model, and you get the price before anything is ordered. If the laptop is otherwise sound and you like it, a keyboard is usually a sensible fix. If it is also slow, the battery is tired and the hinge is loose, it may not be, and a plug-in keyboard for the desk is a perfectly legitimate bridge until you decide. Our worth fixing guide walks through that judgment.

When to bring it in

When a USB keyboard works and the built-in one does not, when a row or block has died, when a key has gone after a spill, or when the laptop is a model you cannot open without breaking something. For the flat $60 we find out whether it is the keyboard, the cable, the board, or a setting, and quote the fix, with the $60 credited to it. Keyboards come with the same 30-day warranty on parts and labor as the rest of our laptop repair. 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 online. Every price we charge is on our prices page.