ports not working

  1. HK1234

    AMD Radeon R9 270X ports are not working on Mac Pro?

    I have a problem... I have a Mac Pro "Eight Core" 2.8 (2008). My old graphics card "died" and I bought another one. The new card is AMD Radeon R9 270X, 4096mb. With OS X El Capitan it almost works. One monitor is working and one display port (dvi) is working, but I can´t get a picture from...
  2. julienscherliss

    [Solved] Hackintosh won't boot and ports have stopped working

    I recently updated to Sierra, last night I left my computer on and today when I turned on my monitors my computer was on but there was no picture, it also appeared that my usb devices that were connected - keyboard and harddrives - were recieving some power but not working, the harddrives were...
  3. redirt

    USB 3.0 Not Working in Yosemite. Please Help

    Hi Folks, Thanks for your advice in advance! I'm unable to locate external drives or even a keyboard through my usb 3.0 ports. My build is as follows: PROCESSOR: i7-4930k Ivy Bridge 3.4GHz MOBO: ASUS Rampage IV Gene LGA 2011 Intel X79 Micro ATX RAM: 32 GB 1600 MHz DDR3 GPU: NVIDIA GeForce...
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