Graphic issue

hello

I use solidworks 2014 with ATI Firepro V4800. I use the driver suggested by solidworks.

Sometimes, when i insert a body into an assembly, i see it black. another issue is, when i select a part from the tree, it is not highlighted into the model.

i just reinstalled the entire package. now i have 2 question:

- is it better to install the latest driver from AMD site and not from solidworks?

- how can i be sure i'm using that graphic card and not the Intel integrated one?

SolidworksAdministration