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Hi everybody! Strange behaviour: My desktop freezes (rotating wheel) on RESTART or SHUTDOWN, but IT is works correctly if I try to restart/shutdown just when El Captain loaded (10-15 seconds) CPU i7-3770 3.40 Ghz GA-B75-D3V ATI 6670 Mem 10 Gb SSD1 480GB + SSD2 480 GB Bios 10/23/2013 Bios...

Please help! 1. Firstly - everything was working with Yosemite. Decided to install El Captain (format system and install) 2. Couldn't install El Captain because during installation progress appeared black screen. Only Solution was removing AMD6000Controller.kext from System/Library/Extensions...