HP probook 4540swith
Pentium 2020M
ram 6gb
OS: windows 8.1 Pro 64 Bits
Graphics: -HD graphics 4000 and AMD Radeon HD 7650M
After w8.1 installation, AMD 13.11 beta 8 and 3345 drivers version:
Everygames work fine. I can switch card. Everything seems to work well except the suspend. Everytime I suspend the computer, it will do a black screen when resume.
Before the lastest intel drivers, It was rebooting after sleeping.
I think it is an AMD problème 
It work fine on Windows 8 
With the HP drivers, but not on Windows 8.1. And with the HP windows 8.1 drivers, we can't use the 7650M drivers... Hope Intel will release soon Gaming graphics cards ! The lack of drivers from AMD is disappointed