how do you defrag computer windows 10
1 From the left pane of the Start menu, click File Explorer. 2  On the opened window, from the navigation pane in the left, expand the This PC tree. 3  From the expanded list, right-click Local Disk (C:) or any other partition on which Windows 10 is installed. 4  From the context menu, click Properties. From the left pane of the Start menu, click File Explorer. 2  On the opened window, from the navigation pane in the left, expand the This PC tree. 3  From the expanded list, right-click Local Disk (C:) or any other partition on which Windows 10 is installed. 4  From the context menu, click Properties.