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Hello everyone, im facing a quite annoying problem. When I try to install OSX (boot Sierra Installation from USB), i get following error: IOGraphics flags 0x43 Sound assertion in AppleHDAController at line 566 Sound assertion in AppleHDAController at line 421 Previous Shutdown cause: 5 Debugger...

Can't boot without USB [Still Need help] Hey guys, first of all, these are my components: - CPU: I5 3570K - RAM: 8GB @1600MHZ - GPU: Palit GTX 660TI - UEFI/MB: AsRock Z77 Pro4 - EL Capitan: 160GB Hard Drive (HDD) - Windows 10: 500GB Hard Drive(HDD) I mentioned it to get everythink working, but...