1. Run regular virus checks and malware scans.
2. Clean up any unnecessary files from your hard drive.
3. Uninstall programs you no longer use.
4. Update your operating system and installed software.
5. Keep your system drivers up to date.
6. Defragment the hard drive for faster file access.
7. Use a power-saving app to reduce energy consumption.
8. Clean the inside and outside of the computer case.