Click on Start, Search, All Files and Folders.

Right-click on file and choose properties

file location example: c:\windows\system32\undeleteablefile.exe

Open a Command Prompt window

Again Click on Start button, Run and type TASKMGR.EXE and press Enter to start Task manager.

Click on the Processes tab, click on the process named Explorer.exe and click on End Process.

Minimize Task Manager.

Go back to the Command Prompt window and change to the directory where the file is located. To do this, use the CD command.

cd \windows\system32

Type DEL where is the file you wish to delete.

Example: del undeletablefile.exe

Go back to Task Manager

In Task Manager, click File, New Task and enter EXPLORER.EXE to restart the Windows shell.

Close Task Manager

Finish