A slower computer is often caused by everyday build-up: low storage, too many startup apps, missing updates, and old software. The good news is that most home users can improve performance safely with a few regular steps.
1) Disk cleanup and storage management
- Open Settings > System > Storage
- Review free space on your C: drive
- Open Temporary files and remove safe temporary items
- Turn on Storage Sense for regular automatic cleanup
2) Manage startup applications
- Open Task Manager
- Go to Startup apps
- Disable non-essential apps that load at startup
- Restart and test performance
This can improve boot speed and reduce background load.
3) Updates and patching (Windows 11 current release context)
In 2026, keeping current Windows 11 feature and quality updates installed remains a key reliability and security step.
- Open Settings > Windows Update
- Select Check for updates
- Install updates and restart when asked
- Update Microsoft Store apps as well
4) Remove software safely
- Open Settings > Apps > Installed apps
- Sort by size or last used
- Uninstall apps you no longer need
- Restart after major removals
Avoid unknown "cleanup" tools that promise unrealistic speed gains.
5) Check for malware
- Open Windows Security
- Go to Virus & threat protection
- Run a Quick scan weekly
- Run a Full scan if behaviour remains suspicious
Sidebar FAQ: Why does my PC slow down over time?
Common causes include storage filling up, too many apps loading at startup, outdated software, browser add-ons, and background tasks. Regular maintenance usually improves this without needing a full reset.
When DIY is safe and when to call for help
DIY: updates, storage cleanup, startup management, standard app uninstalling.
Call for help: repeated crashes, persistent popup warnings, failed updates, or suspected scam/malware activity.