Why your keyboard types symbols instead of letters

You press a letter key and get a symbol, or your keyboard suddenly types something different from what is printed on the keys. The cause may be a stuck modifier key, a changed keyboard layout, or a setting that remaps keys.

First check whether the keys register, then compare what the keyboard sends with what appears in a text editor. The Keyboard Test can help you find out whether the affected keys respond.

Check which keys are responding

1. Open the Keyboard Test and press each affected letter key once, without holding another key.
2. Press both Shift keys, then release them. Also check Alt, Ctrl, and AltGr if your keyboard has it. A modifier that stays active can change what another key types.
3. Open a plain text editor, such as Notepad on Windows or TextEdit on a Mac, and type the same letters. This checks the characters your system produces, not just whether a keypress registers.
4. Try another keyboard if one is available. For a laptop, connect a USB keyboard. For an external keyboard, try it on another computer.

Write down which keys are affected and what they produce. For example, note whether only the number row changes, or whether alphabet keys produce symbols too.

What the result means

The keys register, but the text editor shows unexpected characters

The keyboard is sending keypresses, but something is changing how the system interprets them. Check for a stuck modifier, the selected keyboard layout, or keyboard remapping software. A layout mismatch often changes punctuation and number-row symbols. If ordinary letter keys become symbols, a held modifier or custom keyboard layer is more likely.

The keyboard test does not detect one or more keys

The key may not be registering consistently. Try it in another browser and with another keyboard if possible. If the same key fails on another device, the key or keyboard may be damaged.

Only some keys produce symbols

Check whether you are holding Shift or AltGr, or whether a compact keyboard has switched to a different layer. On many keyboards, Shift plus a number key types a symbol. A layout intended for a different keyboard language can also change where punctuation appears.

The problem happens in just one app

Your keyboard and system layout may be fine. Check that app's shortcuts, input settings, and extensions. If the same keys work in a text editor and in the Keyboard Test, focus on the app where the problem occurs.

How to fix it

1. Tap and release the modifier keys. Press and release each Shift, Alt, Ctrl, and AltGr key. Then test again without touching them. If a key feels stuck or does not spring back, disconnect the keyboard before cleaning it.
2. Switch back to your usual keyboard layout. In Windows 11, press Windows + Space to cycle through installed layouts. To inspect them, open Settings › Time & language › Language & region, select the three-dot menu next to your language, and choose Language options. Review the keyboard layouts listed there and remove ones you do not use. On macOS, open System Settings › Keyboard › Text Input › Edit and choose the correct input source. You can also select an input source from the menu bar if it is shown.
3. Turn off accessibility features you do not need. Sticky Keys can let modifier keys remain active after you release them. In Windows 11, check Settings › Accessibility › Keyboard and turn off Sticky keys if it is enabled. On macOS, check System Settings › Accessibility › Keyboard and turn off Sticky Keys if you do not use it.
4. Check keyboard layers and remapping software. Gaming keyboards and compact keyboards may have a mode that changes what keys do. Check the keyboard's mode keys and its configuration app. Also quit key-remapping or macro software temporarily, then test again.
5. Reconnect the keyboard. Unplug a wired keyboard and connect it again, preferably to another USB port. For a wireless keyboard, check its battery, reconnect its receiver, or pair it again.
6. Restart the computer. This can clear a temporary input problem or release a modifier state left behind by an app. Test in a text editor before reopening the app where the issue started.

When the keyboard may be faulty

If the same keys fail or type incorrectly on more than one computer, the keyboard itself is a likely cause. Look for liquid damage, debris, a bent key, or a cable that cuts out when moved. Do not pour liquid cleaner onto the keyboard. If it is under warranty, contact the manufacturer before opening it. A damaged laptop keyboard may need professional repair; for an inexpensive external keyboard, replacement is often simpler.

Why some keys do not show up in a browser test

Some keys are handled by the operating system before a browser can see them. The Fn key never reaches the browser, and the Windows key and laptop shortcut keys are often intercepted too. So a browser test can check many regular keypresses, but it cannot confirm that every hardware shortcut works. Test those shortcuts in the operating system instead.