If it's at the same point, there's likely a problem with a particular file,
finding the file would require you selecting each file one at a time going
down the list until the system locks up, then you will have to try to delete
the file. Since the system locks up when you select the file, assuming that
happens, you'll probably have to temporarily move everything out of the
folder except that file, then try to delete the folder. Then, create a new
folder and move your files back.