Defrag Windows Computer is an advanced application to defrag desktop or laptop hard disk on Windows PC. It easily defrag hard disk which will helps you to improve booting speed of Windows 8 computers. This advanced application supports to defrag data from various versions of Windows like Windows Vista, 8, 7, Windows XP and Windows 2008, 2003 servers. It defrag data from various file systems like NTFS5, NTFS, Ext FAT and FAT16/32