1. Run a disk clean-up by removing temporary files and other unwanted items.
2. Uninstall any programs you no longer use.
3. Disable any unnecessary startup items.
4. Update your antivirus program and scan your computer for malware.
5. Disable visual effects that use valuable system resources.
6. Check your hard drive space to see if you are running low on storage.
7. Defragment your hard drive.
8. Change power settings to High Performance mode.
9. Upgrade your RAM if needed.
10. Add extra storage if needed.