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#21
I have a very similar problem but Device Manager DOES recognise both, but I just can't use or select the HD4570.
I have upgraded drivers through acer website, windows update and latest catalyst control from ATI
When I plug the power lead in, the control centre message comes up asking if I want to switch graphics processors, I select yes, then it says "Switch complete, now using power saving GPU"
If I go to the catalyst control centre and try select the "High Perforrmance GPU" it just does the same
I need help cos I like Windows 7, but need my HD 4570 for gaming