I have removed all things at start up.
And i stopped all not usefull services.
To know which ones to remove.
Some are obvious
for other i look on internet what is the purpose of the services and when make sense stopped it.
And for other, i tried one by one. I stop one, reboot, look if it still work as i want. If yes, i stop the next one , if no i restart the service and stop the next one.
I tooks time, but at the final it boots in 11secondes.
I have also disabled all device driver i don't need.