Mini W doesn't work anymore

Hello,

i wanted to remove the orange covers on my mini W.
I must be a noob because i was lost after removing apparent screws.

My real problem is that after that... no way my mini W doesn't works anymore.

If I power on, i can hear steppers whistle. but nothing move and the power button is a sort of "pink / "orange" light.
When i power down i can move X  y and Z axe by hand.

On my PC i can make a ping on Printer IP. But Xyz software indicates that my printer is offline.

Any idea ?
THanks