One way that may still work is to boot into safe mode, and then assign yourself administrator rights, and then see if you can find the files to delete them.
Now I use the batch file creation method to rename the subfolder under the folder containing index.bat files, and then only copy the folders back to the original location that does not contain these files, but the resulting batch of files should be run from a separate Windows account that has full administrator rights.
Flash
source share