Earlier today, I replaced the old, worn out battery in my MacBook Air to a newer one.
Upon startup, the fans within the computer went off at full speed and the entire computer is laggy. I have attempted to restore my computer from a Time Machine backup by holding both Command+R and Option (two different startup times) to which both have arrived at the current result I'm at:
My MacBook Air does not go past the initial startup screen and is stuck with a 0% progress bar.
I've attempted to restart numerous times and I'm fairly certain this isn't helping anything. I assume that the high fan usage is due to the CPU being overworked, but what would be using the CPU that much on a startup?
My question is, how do I go about fixing this? Attempting to enter the macOS Utilities causes a road block before I even start to progress there.
- MacBook Air
- Mid 2012
- latest public macOS release