How do you fix a car boot that wont shut and lock?

To fix a car boot that won't shut and lock, first check for any obstructions in the latch mechanism or debris around the boot area. Ensure the latch is not damaged and that the locking mechanism is functioning properly. If the latch is misaligned, adjust it by loosening the screws and repositioning it. If issues persist, inspect the wiring and connectors if it's powered or consider consulting a professional for more complex problems.