The problem maybe similar to
Windows 10 screensaver often stops working/doesn't work
The difference is, since I reinstall windows 10 in this computer, it never works. That one seems to use to work but not working anymore.
Basically I like security. I do not want people to be able to access my file at all.
Sometimes I forget to log out and just leave my computer.
When I come back, my computer is still open.
I want to make sure that my computer is logged out or at least switched out or whatever the term is for windows 10 after 1-2 minutes.
I believe I set things up very correctly
There I set that up. Bubbles screen saver. Log out after 2 minutes.
Yet that screensaver never shows up.
What did I do wrong?
Is there another screen saver setting somewhere else that override this?
Settings > Power & sleep > Screen > When plugged in, turn off after > XX minutes
is a good place to look. The screensaver is pretty much obsolete these days as actually turning off the display is far more power efficient.