Why does my keyboard keep typing by itself?

Answer

A keyboard typing by itself is usually caused by either a hardware fault, a software issue, or external interference. Here are the most common reasons:

1. Stuck or faulty keys (hardware issue)
   Dust, liquid spills, or wear can cause one or more keys to register repeatedly. This is the most common cause on laptops. Even a slightly stuck key can make it look like “ghost typing.”
2. Keyboard damage or liquid spill
   If the laptop has ever had water, tea, or any liquid exposure, the keyboard membrane can short internally and send random inputs.
3. Malware or remote access software
   In rare cases, malware or remote-control software can trigger unexpected typing or system behavior. This is less common but worth checking.
4. External keyboard or Bluetooth device interference
   If you have a USB or Bluetooth keyboard connected, it may be malfunctioning or sending repeated keystrokes.
5. Driver or operating system glitch
   Corrupted keyboard drivers or Windows input issues can cause repeated characters or phantom typing.
6. Accessibility features enabled
   Features like Sticky Keys, Filter Keys, or Toggle Keys can sometimes cause unusual keyboard behavior if misconfigured.
7. Physical pressure or touchpad issue
   On some laptops, a failing touchpad or palm rejection issue can trigger random inputs that feel like keyboard typing.

Quick checks you can do:

• Disconnect any external keyboard or USB devices
• Restart the laptop
• Test typing in BIOS or Safe Mode (to see if it’s hardware vs software)
• Clean the keyboard gently with compressed air
• Run a malware scan
• Try an external keyboard (if it behaves normally, your internal keyboard is likely faulty)

If it still types on its own even in BIOS, it’s almost certainly a hardware issue and the keyboard likely needs replacement.