go to that weird machine that broke on the start.
go as close as you can.
you will see a dial with a lot of colours on it.choose a colour.
on top of the dial there is a slider. with that slider you choose the shape of the
crystal.
when a crystal is ready push the first small button down and when preparing the other
crystals push the next and the next. at the end push the big button to talk to atrus.