1. Update your operating system and drivers.
2. Run disk cleaning software to delete temporary files, clear caches, and defragment the hard drive.
3. Add more memory or upgrade to an SSD drive.
4. Uninstall any programs you no longer use.
5. Disable startup programs that are not necessary.
6. Use a reputable antivirus program and regularly scan for viruses, spyware, and other malicious software.
7. Limit the number of programs running in the background.
8. Adjust your power settings and turn off unused devices.
9. Clean up the registry and repair any corrupted files.