How fix my keyboard problem?

CryingLegend

Distinguished
May 16, 2014
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I have my volume stuff on f1, f2 and f3. When I play games that use the f1, f2 and f3 buttons I cant use them because it only turns down or up the volume. How can I fix it? I see other people that have that they have to click ctrl or shift to use the volume mixer.