1. Delete internet browser caches, history and temporary files.
2. Uninstall unused or outdated programs.
3. Empty the Recycle Bin.
4. Clear downloads folder, documents and desktop folder of unnecessary files.
5. Run disk cleanup tool.
6. Disable startup programs.
7. Defragment and optimize hard drives.
8. Check for viruses and malware.
9. Adjust visual effects and features.
10. Reduce the number of notifications and distractions.