User level: Level 1 (4 points)my 2015 MacBook pro keeps shutting once i sign in
[Re-Titled by Moderator]
Original Title: How to fix it
Posted on Oct 7, 2026 2:38 AM
User level: Level 9 (53,902 points)Oct 7, 2026 3:38 AM in response to chef83
Hi,
A 2015 MacBook Pro that shuts down right after signing in is usually caused by a corrupted user profile, a problematic login item, a failing battery under load, or corrupted system files loaded at user authentication.
Try to startup in Safe mode, then normal boot could solve your issue.
Start up your Mac in safe mode – Apple Support (UK)
Originally posted at discussions.apple.com/thread/256371802