AMD PCI Express drivers

During the setup with AMD Catalyst Center the PCI express driver and some other drivers don't get updated for a strange reason. When you want the latest driver you must navigate to the installation folder and look for a folder amdkmpfd. Then load the device manager and update driver for PCI express. Especially PCI express can be important with crossfire. Source: http://forums.guru3d.com/showthread.php?t=373501.