1. Uninstall any unused programs.
2. Clean up your hard drive by deleting temporary files, unnecessary downloads, and old archives.
3. Run a virus scan to protect your system from malicious software.
4. Use disk cleanup or a third-party program to find and remove duplicate files.
5. Adjust your power settings to improve the speed of your computer.
6. Update your operating system and install the latest security patches.
7. Disable startup programs and stop applications from running in the background.
8. Upgrade your RAM or replace an outdated processor with a newer one.