Good evening, I am writing to a problem I encountered when upgrading to Windows 8 64 Bit. I have a Sony Vaio VPCEB3Z1E and my video card is ATI Mobility Radeon HD 5000 Series (Microsoft Corporation - WDDM v1.20). Every time you turn on the PC displays an error message that says to reinstall the software. I have uninstalled all components of ATI's PC and I downloaded the latest drivers from the site but I can not install them. Doing a little research I discovered that there is no longer even ATI Catalyst Control Center. I gently know how to fix this problem. Thank you!