"MacBook touchpad is non responsive: Touchpad (MacBook 2009) in not responsive. Can it be repaired?"
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Other than Safe Mode or taking this in for service, it may be no more than a matter of making a few changes in System Preferences, or reinstalling the macOS.
Troubleshooting the Trackpad (2009 Mac):
Report back if anything here does the trick...
A. Through Use of System Preferences:
Is an external mouse connected? Other than maneuvering your way tough the keyboard, you'll need an external mouse to perform this...
- Go to: Apple menu
- Select: System Preferences
- Click: Accessibility
- Select: Mouse and Trackpad on the left
- Toggle Off: “Ignore built-in trackpad when mouse or wireless trackpad is present”
B. Single-Out this User:
What happens when you create a new Administrator user? do you still get this error? If not, then it it like an issue with the configurations of the current user. If so, then it is an issue of the macOS, in which case, you'd need to reinstall it to get the correct drivers...
C. Reinstalling the macOS:
Nothing would be lost. It's just that misplaced items would be placed back to where they should be and corrupt system files would be replaced by clean files. Go Here: Reinstall macOS - Apple Support. Use [command + r]. Important: Prior to installing an update or performing a reinstallation, to prevent data loss, be sure to Back up your Mac with Time Machine.
D. Restore from a Backup:
Any recent Backups prior to this issue?: If you backed up your Mac prior to having the issue , restore form it. Sometimes, an update can fail due to power issues, or losing connection to Apple's servers. So, know to always back up your Mac prior to making any major changes to it, successfully as au update. In doing so, you with have something to restore store your Mac from from, should anything go wrong with the upgrade.
