Keyboard not working on ChromeOS
Keys that don't type, repeat, or stick on ChromeOS are usually a connection issue, a stuck key, or a driver/layout problem. Try these, then check every key live.
Step-by-step fix
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Reconnect the keyboard: replug USB (try another port), or re-pair Bluetooth. For a laptop, restart ChromeOS.
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Run the CheckMyMic keyboard test and press each key — any that won't light up is the problem key.
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Clean under a stuck or unresponsive key with compressed air.
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Check your keyboard layout/language is correct in ChromeOS settings, and turn off Filter/Sticky Keys.
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Update or reinstall the keyboard driver, then restart.
Frequently asked questions
Some keys don't work on ChromeOS — is it broken?
Run the keyboard test and press the dead keys. If they never light up across the test, the keys (or the keyboard) are faulty; if they work in the test, it's an app or layout issue — start with the input/keyboard settings in ChromeOS rather than the hardware.
My keyboard types the wrong characters on ChromeOS.
That's a layout/language mismatch. Change the input language in ChromeOS settings to match your keyboard.
Keys are still dead on ChromeOS after everything — is the keyboard finished?
Run the CheckMyMic keyboard test one more time: keys that never register there, in any app, and (for an external keyboard) on a second computer are hardware failures. On a laptop, plugging in a cheap USB keyboard both gets you typing immediately and proves the built-in keyboard is the fault — that's a repair, not a settings fix.
My Chromebook's top row acts as F1–F12 (or the reverse).
Settings → Device → Keyboard → "Treat top-row keys as function keys" flips the behavior; holding the Launcher/Search key temporarily flips it too. The same panel remaps Search, Ctrl and Alt — worth checking if you expect Caps Lock where ChromeOS puts the Launcher key.