Delete Undeletable file

Note down the path of the files which you want to delete..

First of all you have to Open MS-DOS
*Press CT+ALT+DEL and then Goto "Processes" and disable "Explorer.exe"
Don't close Task manager...
*Goto Command Prompt and type
Del " File path " (Here File path is the path that you noted at first step).

*Goto Task manager Click on "File" then on "New "New Task" then type "explorer.exe"

Check out whether file is deleted or not....