Q: Nvidia card not working now.

Hi. I have a Mac Pro and a Nvidia Geforce GT520 as a second card for my third monitor, everuthing was working fine with el Capitan, however after upgrading to Sierra my system get stuck if I use the Nvida card. Any Ideas?

Mac Pro, macOS Sierra (10.12)

Posted on Sep 22, 2016 7:47 AM

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Q: Nvidia card not working now.

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by sterling r,

sterling r Sep 23, 2016 1:50 PM in response to dcorreal
Community Specialists

Sep 23, 2016 1:50 PM in response to dcorreal

Hi, dcorreal!

Thanks for joining Apple Support Communities! It seems that your GT520 NVIDIA GeForce card seizes up your system whenever you try to use it after upgrading your MacPro to macOS Sierra. I'll be glad to help you get that working correctly.

1. Try safe mode if your Mac doesn‘t finish starting up -- Safe mode makes sure your Mac is starting up right.

2. How to Reset NVRAM on your Mac -- Resetting NVRAM is indicated when there's an issue with the display.

3. Reset the System Management Controller (SMC) on your Mac -- Resetting the System Management Controller makes sure everything starts up correctly.

4. NVIDIA - Contact Us -- If the above steps haven't helped, contact NVIDIA for help.

Take care!
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