I edited my post

or Boot up to DOS and delete it from there

• To delete a file from the DOS prompt (command line) you use the command:
  
• del filename <Enter>
  
• File names can be entered using wild cards (* and ?) where the star (*) is any string and the ? is any single character. Deleting a file called "mypictureofthegreenmoster.jpg could be done by entering:
  
• del mypic*.* <Enter>
  
• which will delete ALL files beginning with "mypic". This is sometimes helpful if there is a problem with a filename that has acquired weird characters in its name.