OKAY I managed to make it work with task manager, but it is not easy!
Follow the tutorial about how to wake up computer automatically.
And then here is the trick :
click on the battery icon on bottom right corner and choose "other energy options" (or something similar, my laptop is in French, I am giving a rough translation), then "change mode settings" of the energy mode you are using for crusing (I created one called "nav nights" in which screen
and computer go to sleep after one minute).
Then "change advanced settings" then under "sleep", activate "allow out of sleep timers".
That's it ! Now computer wakes up every 30 minutes, AIS
checks around, and goes back to sleep after one minute! Thanks all!