📢 Newsroom Update

Apple introduces M4 Pro and M4 Max. Learn more >

Looks like no one’s replied in a while. To start the conversation again, simply ask a new question.

Level 1

4 points

-2100F Error when powering on

My elderly neighbour has handed me a macbook to fix.

When i power up, a screen comes up with an exclamation in a triangle, followed by apple.com/support, followed by -2100F.

Any ideas how to get past this?

The macbook itself is not on my wi-fi network.

Thank you!

MacBook

Posted on Jan 22, 2021 9:22 AM

Top-ranking reply

Level 10

91,237 points

Posted on Jan 24, 2021 4:24 AM

This article pertains to the ! mark at startup and what actions to take.

View in context

Similar questions