1. Check for any possible hardware issues that may be causing the animations not to be rendered properly.
2. Ensure that the correct version of Microsoft PowerPoint is installed and running in the computer.
3. Try restarting the computer, and then checking PowerPoint again.
4. If the issue persists, try recreating the presentation from scratch.
5. If the animation still doesn’t work, check for compatibility issues with external hardware devices connected to the computer.
6. If the issue still persists, seek help from an IT expert.