I have an HP ProBook with two cards, an Intel and an AMD Radeon HD 7850M. I want to switch to the AMD, because it is better that way. How can I do that?
It sounds like you want to tell all programs on your laptop to use the AMD graphics card. This isn't how it works. Instead, you "switch" to the AMD graphics card on a per-application basis.
To use the AMD graphics card with a certain application, right-click the application icon and choose the appropriate option on the context menu to use your AMD graphics card for that application. The program will run and its graphics processing needs will be handled by the AMD graphics card, but other programs will continue using Intel adapter.