said thus to which I respond:

In this picture, you can see how to configure a
sleep setting. You could set the machine to sleep
after 1 hour of inactivity, for example.

It's grubbed so I don't think hibernate will work.
All I really want is a shutdown or slowdown after about an hour of not use.
I don't think sleep will work with grub to linux to access windows files
will it?