How to Check the AMD Card Installed on the System (Switchable Graphics)

The mobility checker on AMD's website will download the generic drivers if your system passes. Once you have the CCC, you should be able to check the GPU switching. The 7 series also has had multiple BIOS updates for the issue, and while it's not 100% fixed, the new BIOS at least lets you force it to use only either the IGP or the AMD.

The direct download for the current mobility drivers is http://www2.ati.com/drivers/mobile/12-4_mobility_vista_win7_64_dd_ccc.exe, and a few other websites also host it with mods to work on unsupported systems.

Normally your laptop vendor will provide a special driver that supports switching between the integrated and discrete graphics. (Normally this driver comes from the non-Intel side, i.e. AMD in your case, but they will only release it through your laptop's vendor.)

Installing generic drivers from either AMD or Intel will disable the other card and may cause the graphics output to be read from the incorrect chip. If you have graphics drivers for Windows 7, you can try installing that using the "I have disk" option (google it).

Intel seems to be keeping up with their reputation as the supplier of the worst drivers in the world, so you may have to wait for quite a while before official Win8 drivers will come out.