Solved: Deleted all kexts, now computer doesn't work.

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Kext

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Mar 24, 2015
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I was having the problem with kernel_task, so, in an effort to fix it, I deleted all the .kext files in system-library-extensions. All of them. Now my computer will not turn on. The apple logo appears and the booting-up bar fills halfway and then stops. This is on a 2012 MacBook Air running Yosemite. I think it's the latest version. Please help.
 
Joined
Feb 9, 2005
Messages
2,609
You are going to have to boot into Recovery Mode or Internet Recovery Mode and re-install.

https://support.apple.com/en-us/HT201314

Do NOT format the hard drive, as you can install and preserve your user accounts.

In the future, deleting KEXTs vary rarely will solve any problems. (Unless you've been messing around with them)
Most issues would likely be corrupted files elsewhere in the system. If a KEXT itself is corrupted it shouldn't even load.
 

Kext

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Mar 24, 2015
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2
Thank you. I have used Internet Recovery Mode to wipe my computer and reinstall Lion. It now works.
 
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