What is a system restore?

Question

i had a disk cleanup and it deleted all my files?

is a system restore something that i would gain all my pictures back?

Answer 1

System Restore helps you restore your computer's system files to an earlier point in time. It's a way to undo system changes to your computer without affecting your personal files, such as e‑mail, documents, or photos.

Answer 2

If you have enabled system restore it may help, But may be the files needed for system restore may also be removed.

Just check it yourself

Answer 3

It restores all your files to a previous time, go to start-all programs-accessories-system tools-system restore, and from there it's pretty clear.