Q: Ecran du MacBook Pro noir alors qu'il est en marche

You may try some of the options listed here:

http://support.apple.com/kb/TS2570

Ciao.

le macbook pro c'est de quelle annee? voir http://support.apple.com/kb/TS2377.

If you feel that applies to your Macbook Pro, contact Apple directly.  We are not the Apple Corporation.  We are just people who own and use Apple products.  No one on this forum can make any decisions for you in such a situation.  Only Apple authorized people can.

Good luck.

Ciao.

i don't know what year their mbp is but i was suggesting they look at the possibility of the nvidia failure. obviously they would need to check with apple about it.

If you purchased it last July you still are under warranty.  Take it to your nearest Apple store.  They will fix it for free.

Ciao.