3. Use: Use of Windows Computer  function: (1) Add or change desktop icons. (2) How to change desktop background wallpaper and themes. (3) How to create New Folder. (4) How to delete or permanently delete a Folder or file. (5) How to Minimize, Restore Down, Maximize or Close a window. (6) How to close a open file, folder or program by force (if normally not close). (7) How to change screen brightness or power options. (8) How to change power button and lid (monitor) close action (Laptop). (9) Create user account with password. (10) Create guest account with password. (11) How to uninstall a program. (12) How to change computer date & time. (13) How to pin a program in Taskbar or Start Menu. (14) How to change screen text size (DPI). (15) How to hidden a files or folders. (16) How to hidden a drive. (17) How to show hidden files, folders. (18) How to show hidden drive. (19) How to lock a drive by password (by BitLocker). (20) How to use check box to select items. (21) How to disk defragment to increase access speed. (22) How to share a folder. (23) How to add a share printer. (24) How to open On-Screen Keyboard. (25) How to use computer Speech Recognition. (26) How to format a drive or Pen drive. (27) How to turn off AutoPlay. (28) How to search a file in whole computer. (29) How to make restriction for a guest account. Share