Windows Kernel Driver Test Signing -mode is not supported by EasyAntiCheat. You need to disable it in order to play EAC protected games, or then you will need to obtain signed driver. If you are using for example some old sound card please check if the manufacturer website has signed driver available or contact them and ask if one is available.
You can disable the test signing mode with these instructions: http://msdn.microsoft.com/en-us/library/windows/hardware/ff553484%28v=vs.85%29.aspx
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