1. Scan and remove any malware or viruses.
2. Clean up your disk space.
3. Uninstall unused programs.
4. Update your operating system.
5. Close unnecessary background applications.
6. Disable startup programs.
7. Reset power options to maximum performance.
8. Reduce visual effects.
9. Defragment/optimize hard drives.
10. Install and configure a good antivirus program.