1. Update operating system and software: Make sure the operating system is up to date, and that all critical software patches and updates are installed.
2. Scan for malware: Use an updated anti-malware tool to scan for malicious software like spyware, viruses, and worms.
3. Run disk cleanup and defragmenter: Use disk cleanup to delete unnecessary files and folders, and then run disk defragmenter to optimize disk access speeds.
4. Uninstall unused programs: Remove any programs that are no longer in use or needed.
5. Clean up startup items: Disable any unnecessary startup programs to improve boot times and system performance.
6. Adjust power settings: Ensure the system is utilizing maximum power saving settings and settings for peak performance.
7. Check hardware health: Make sure all of the hardware is running correctly and that temperatures and fans are within acceptable levels.
8. Check browser usage: Clean out the browser cache and temporary files, disable unnecessary add-ons/toolbars, and check for any security settings that could be improved.