The “Low Disk Space” error occurs when your hard drive is running out of free space. This can lead to system slowdowns, software issues, and difficulty saving files. Start by freeing up disk space by deleting unnecessary files, uninstalling unused programs, and emptying the recycle bin. You can also consider moving files to an external storage device or upgrading to a larger hard drive. Regular maintenance, such as disk cleanup and organizing files, can help prevent this error in the future.