跳转到主内容

How to reset the SMC, PRAM and NVRAM on an iMac Pro

  1. How to reset the SMC, PRAM and NVRAM on an iMac Pro, SMC reset Part 1: 步骤 1 中的图像 1,1
    • Choose Apple menu > Shut Down.

    • After your Mac shuts down, press and hold its power button for 10 seconds.

    • Release the power button, then wait a few seconds.

    • Press the power button again to turn on your Mac.

    • If that did not solve the issue, move on to Step 2

  2. How to reset the SMC, PRAM and NVRAM on an iMac Pro, SMC Reset Part 2: 步骤 2 中的图像 1,1
    • Choose Apple menu > Shut Down.

    • After your Mac shuts down, unplug the power cord.

    • Wait 15 seconds.

    • Plug the power cord back in.

    • Wait 5 seconds, then press the power button again to turn on your Mac.

  3. How to reset the SMC, PRAM and NVRAM on an iMac Pro, PRAM and NVRAM reset: 步骤 3 中的图像 1,1
    • Shut down your Mac.

    • Then turn it on and immediately press and hold these four keys together: Option, Command, P, and R.

    • You can release the keys after about 20 seconds, during which your Mac might appear to restart.

    • You can release the keys after the Apple logo appears and disappears for the second time.

    • You must have a wired keyboard made by Apple in order for this to work.

    • You can buy one from Amazon here.

结论

If you have tried all of these resets and still have problems, head on over to our Answers Forum!

8等其他人完成本指南。

[deleted]

于08/28/18注册

26,136 声望

创作了21篇指南

一条评论

one of my thunderbolt ports stopped working. I used the SMC and PRAM reset and they all worked afterwards. thanks!

Admin User - 回复

添加评论

浏览统计数据:

过去 24 小时: 13

过去 7 天: 96

过去 30 天: 439

总计 38,066