I have 2 graphic card
Intel HD Family (which is slow but my primary gpu)
And AMD 4000SeriesMobility 4850M

When i play it automatically use the intel one
How to switch to use the amd as the primary
Help is appreciated !

the Intel isn't a graphics card, it's an integrated chipset.

Plug your monitor in to the AMD card at the back of your computer.

It's a setting in Catalyst, you need to add TB to the list & tell it to use the "high performance" GPU.
While you're at it see if they still have options to set the defaults on everything so it doesn't try to use the crappy Intel.

Yay laptops, yay power saving crap.