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hussain248 Author

Level 1

4 points

MacBook suddenly super lagging n slow.

Nothings changed. Woke up in the morning n MacBook won’t turn on. Dies literally in the middle of startup sound. Even after complete startup it’s “SUPER” slow. Like I have installed Big Sur on the very first MacBook.

reinstalled OS X - nothing changed.

Resetted everything like said in these topics - SMC, V…, RV…. - nothing changed.

etercheck shows no problems except hard disk maybe - I installed the whole is on my T5 ssd - still lagging - nothing changed.

I have literally done all of it. What could be causing this suddenly? It hasn’t even been dropped or anything.

even the apple diagnostics don’t show any issues. The disk utility first aid shows no issues.

Posted on Aug 12, 2021 3:18 AM

Top-ranking reply

dominic23

Level 10

83,964 points

Posted on Aug 12, 2021 4:53 AM

Startup in Safe mode. https://support.apple.com/en-gb/HT201262 Choose the appropriate method.

To leave Safe Mode, choose “Restart” at the bottom.

Quote:

Safe mode prevents your Mac from loading certain software when it starts up, including login items,

system extensions not required by macOS,

and fonts not installed by macOS. It also does a basic check of your startup disk,

And it deletes some system caches, including font caches and the kernel cache,

which will be created again automatically as needed.

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MacBook suddenly super lagging n slow.

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