Issue Description
Keyboard or trackpad becomes unresponsive or partially works.
Common Causes
- Accessibility settings enabled
- Hardware firmware glitch
- Liquid or debris
Step-by-Step Solution
Step 1: Check Accessibility Settings
- System Settings → Accessibility
- Disable Mouse Keys or unusual input options
Step 2: Restart Mac
- Rule out temporary system glitches
Step 3: Reset NVRAM / SMC
- Follow reset steps above (Intel Macs)
Step 4: Test in Safe Mode
- Confirms software vs hardware issue
Explore Further
- External keyboard test
Prevention & Best Practices
Avoid eating or drinking near keyboard.