Match the symptom before changing settings
| What you observe | Where to focus |
|---|---|
| No keys work but the keyboard has no lights | Check power, cable, receiver, port and hardware |
| Keys type different characters | Check language, layout, Num Lock and remapping software |
| Keyboard works in BIOS but not Windows | Focus on Windows settings, filters and driver stack |
| Only several keys fail everywhere | Clean carefully and test for physical keyboard damage |
Diagnose keyboard not working before replacing drivers
Check Keyboards and Human Interface Devices in Device Manager. If the keyboard is detected normally but only certain keys fail, software repair is less likely than layout, accessibility, or hardware issues.
For external keyboards, test another USB port and another computer. For laptop keyboards, check whether keys work in BIOS/UEFI or preboot menus to separate hardware from Windows.
Use the symptom evidence to select the correct layer. “No keys work but the keyboard has no lights” points toward check power, cable, receiver, port and hardware, while “Keys type different characters” suggests check language, layout, num lock and remapping software. Also note what changed immediately before the failure: a Windows update, driver package, new dock, BIOS update, sleep or hibernation cycle, physical impact, liquid exposure or installation of device-management software.
Use chipset, HID, or OEM hotkey packages from the exact PC manufacturer when needed. Generic keyboard devices usually rely on Windows built-in HID drivers.
Restart Windows, disconnect spare input devices, disable temporary macro/remapping software, and test a simple typing field before removing drivers.
The remaining symptoms also narrow the search: “Keyboard works in BIOS but not Windows” means you should focus on windows settings, filters and driver stack, while “Only several keys fail everywhere” means you should clean carefully and test for physical keyboard damage. After each repair, verify the original function rather than accepting a successful installer message. A package can finish correctly while Windows still loads another driver or the hardware remains unavailable.
Restore control and test the hardware
Open Settings > Accessibility > Keyboard and enable the On-Screen Keyboard when the mouse or touchpad works. For USB hardware, reconnect directly to another port and remove a hub. Replace batteries, reconnect the receiver or re-pair Bluetooth keyboards.
Test the keyboard on another computer. For a laptop, check whether keys work in firmware setup or the boot menu. A keyboard that fails before Windows loads is more likely to have a cable, keyboard matrix, liquid-damage or motherboard problem.
1Check Windows input settings
- Confirm the language and keyboard layout.
- Turn off Filter Keys for testing.
- Exit macro, gaming and remapping utilities.
2Repair detection
- Check Keyboards and Human Interface Devices in Device Manager.
- Install the PC maker's chipset and input packages.
- Restart after uninstalling only the confirmed keyboard entry.
Fix wrong, delayed or repeated typing
Wrong symbols often come from a changed layout rather than a driver. Use Windows + Space to inspect installed layouts and remove accidental extras. Check Num Lock when laptop letter keys produce numbers and test without third-party remapping software.
Filter Keys can ignore brief presses, while repeat delay and rate affect held keys. Sticky Keys changes modifier behaviour but normally does not disable ordinary typing. Adjust one accessibility setting at a time and keep the ones you need.
Handle laptop and post-sleep failures
Laptop keyboards may depend on chipset, HID, Serial IO or vendor hotkey components. Install the exact model's supported packages and BIOS only when relevant. A keyboard failing after sleep can indicate platform or firmware coordination rather than a generic keyboard driver.
For liquid exposure, shut down, disconnect power when safe and obtain hardware service. Continuing to power the laptop can spread corrosion. Do not remove keycaps from scissor-switch laptop keyboards unless the manufacturer documents the procedure.
Verify the repair before making more changes
Restart Windows—not only the affected app—and confirm that every key, modifier and shortcut works correctly in a plain text editor. Check Device Manager again: the device should remain present without a warning icon, and Device status should say it is working properly.
Type in Notepad, test modifier/function keys, restart Windows, and repeat. For USB keyboards, reconnect once and confirm detection remains stable.
Technical order checked against Microsoft's current mouse and keyboard guidance. Device-specific menus and driver availability vary by manufacturer.
Frequently asked questions
Why is my keyboard typing the wrong symbols?
The active language or keyboard layout may have changed. Check Windows + Space and installed layouts.
Why does the keyboard work in BIOS but not Windows?
The hardware path is probably functional, so inspect Windows input settings, accessibility filters, software and drivers.
Can Filter Keys make a keyboard seem broken?
Yes. It can ignore short or repeated keystrokes. Turn it off temporarily to compare.