A cluttered computer desktop can lead to a decline in performance, indicating the need for system cleanup. Regular maintenance enhances speed, storage space, and overall functionality. Windows has built-in tools for optimization, starting with ensuring the latest updates are installed. Windows 11 features "Cleanup Recommendations" to identify large files and unused applications for deletion. The Disk Cleanup utility can remove unnecessary files like temporary internet files and system cache files, recovering disk space and improving speed. Clearing the location cache and flushing the DNS cache can also enhance performance. Additional maintenance tips include regularly emptying the Recycle Bin, organizing files, uninstalling unused applications, using external storage for large files, and running malware scans.