Something which could be worth trying:
Use the file manager on a linux live CD.
I recommend Ubuntu because it's very easy for Windows users who have never used Linux before. Also its most recent version will almost certainly have the right drivers
for all your hardware.
You can download the latest Ubuntu istaller from here: Download Ubuntu | Ubuntu
It;s an iso which you burn to CD, which will be bootable.
Although it's the Ubuntu installer, there's no need to install it to your hard disk, you can just boot it to use the Ubuntu OS direct from the CD. It has a good file manager on its menu, very similar to Windows Explorer.
Ubuntu disobeys all Windows protections about ownership. I have used it to copy files from User folders which I could not access in Windows.
after posting that I notice Frostmourne has also suggested it