Are you using graphic drivers from HP or did you install drivers from AMD? HP drivers are what you need to use. You can download them at HP Laptop support/downloads. HP published a guide which is a good source of information on 'switchable' graphics regardless of which brand laptop you have.
Also, at the top of this forum is a sticky "Updating Mobility Drivers" which has more information.
Intel I7 960 @ 3.87ghz *Intel DX58SO *HIS HD6970 2gb *Corsair TX650M *2x4gb Corsair XMS3 *WD Black 1TB *Windows 7 Home Premium 64bit *Gateway HD2401 24" 2ms 1920x1200 ***Asus N71Jq laptop *Intel I7 720QM Processor *Mobility Radeon HD5730 1gb *8gb Ram *Windows 7 64bit
* A clear conscience is usually a sign of bad memory *