Hello all, I am new to the forums and I need your help, please. 
I have looked everywhere on the internet for an answer or a clue but I cannot find anything that works.
I own an Acer Aspire 4820TG that has both an Intel HD Graphics and an ATI Radeon HD 5470 GPU.
I was having issues with my HDD so I decided to upgrade to a newer one, thus having to do a clean install of Windows 7 Home Premium. I downloaded all the necessary drivers from the Acer support site and all went well. The only thing not working properly is the switching of the graphics cards. I have installed the drivers for both the Intel and ATI GPU and in the Device Manager panel both are recognised and both are working properly, no error codes or messages in their Properties windows. I have downloaded and installed the AMD Catalyst Control Center and when I open it it recognises the ATI card, no problem, but regardless of all this I still cannot use it because I cannot switch to it and the laptop keeps using the Intel HD Graphics.
I tried to find a way to switch GPUs from the Control Panel, the desktop personalization, the Catalyst Control Center... nothing. The Radeon card is there and it is recognised, but alas, the laptop seems adamant that I cannot possibly switch to it.
Is there any piece of software or UI that I may be missing? A switching interface of some kind?
Before installing the new HDD I remember there was a link when I right-clicked on the desktop, that said "Switchable Card Settings" or something similar, now it's gone... there was nothing of the sort in the long list of drivers I downloaded from the Acer support page.
I would be really grateful for any and all suggestions or information you might give me!
