I found another solution, even thou you fixed, I'm still going to post it, glad you fixed it, hope this works next time someone has this problem.
Delete - Can't Delete Files or Folders
Checkpoints/workarounds: Test the Delete after each suggestion.
1. Go to Start/Run/CMD and type in: RD /S [drive:] path
2. Open Notepad and save the (blank) file with the name of the undeletable file. Under save as, navigate to the file, delete.
3. Move the file into a new directory and then delete the directory.
4. Close all open apps. Open a command prompt (Start/Run/CMD) and navigate to the directory with the offending file(s). Then open the Task Manager and click on the Processes tab, select "explorer.exe" under Image Name. Click "End Process".
In the opened Command Prompt, DEL the offending files (DEL *.mpg, DEL mus*.avi, DEL test.wmv, etc.) Once done, go back to the task manager and click on the Applications tab. Click the "New Task..." button. in the dialog, type explorer.exe and click OK.
Note: Could also opt for: ATTRIB -H -R -S filename before the DEL.