I deactivated everything in the picture above, so clicked Deactivate everything?

If I start my laptop and enter my password, nothing happens and my laptop turns off for a few seconds

Now, of course, it's hard to know why your laptop isn't starting up properly. The actual part that is more important, and can also be seen in the picture, is the system start tab. There you will find a list of all programs that are started automatically when you start your PC. There you can deactivate a lot. You probably don't need to deactivate the services at first.