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How can I ensure my Samsung Series 7 is actually using the Radeon switchable graphics?

I recently installed Windows 8 on my Samsung Series 7 laptop. It's working wonderfully apart from one detail that would be that my AMD Radeon HD 6750m GPU doesn't activate/start when I start playing games. I'm stuck using the Intel HD graphics that's attached to the CPU. I know it's not running because I used GPU-Z to test its load level when running Far Cry 3 - its load level was at zero.

How do I get the AMD GPU to activate/start when playing a game?

I've installed all the latest drivers for all my hardware. I'm not sure if it had to do with the Windows 8 installation, but it has only started since then.

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Do you have a BIOS option to choose whether to boot from the integrated graphics or the discrete? That may have something to do with it. Try booting from the discrete card as the primary display if you have the BIOS option -- my ThinkPad does have such an option but I don't know about the Series 7.

The question and answers to this other SuperUser question may prove very helpful to you. According to one answer, a BIOS update to this laptop provided the capability to select, at boot time, which adapter is the primary GPU. By setting the primary GPU to the discrete, I'm sure you'll be able to get it working, even if the "switchable" part isn't working.

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allquixotic
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