I am running fully updated Windows 10 on my laptop. I notice that my C: is almost out of space and the huge file using 90%+ is hiberfil.sys. I went to your website and followed the directions to delete hiberfil.sys and I have done so as administrator BUT it has not freed up any space on my C:. To all intents and purposes, the file is still there. It is not in the recycle bin. How can I fully delete it and free up the space? James