I've bought Dell Inspiron 15r 5520 with dedicated video card AMD 7670m 1gb vram.The problem is when I play games,video renderering etc. I use integrated (hd 4000) video card not the dedicated.I've tried "Configure Switchable Cards" to run programs in "High Performance" or "Power Saving" mode but nothing helped - runs everything only with integrated video card.So my question is - Why is hepening like that and how to fix it ?
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