Delete unused files and downloads
Empty the Recycle Bin or Trash
Uninstall programs you no longer use
Remove duplicate files
Clear temporary files and cache
Organize documents, photos, and folders
Delete old desktop shortcuts and clutter
Run a disk cleanup tool
Scan for malware and viruses
Update your operating system and software
Back up important files
Clean dust from the hardware
Check startup programs and disable unnecessary ones
Restart your computer regularly