Just to be 100% sure, you did select "GeForce 500M Series (Notebooks)" from the drop-down, which then added an additional drop-down menu where you could select "GeForce GTX 560M" and then you selected Windows 7 64-bit?
If you didn't have the drop-down to select the GTX 560M GPU then you downloaded the desktop drivers. By default the driver page has "GeForce 500 Series" selected and that is for desktop GPUs.
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Yahooligan
ASUS G74SX-XR1 :cool: