MBA wont restart, shutdown, logout OR update?

[Anomen]

Hi guys!

I have a very odd problem: My mac is working perfectly fine - apart from the fact that it will neither log out, restart or shut down via the apple-menu - only by holding down the power-button will it shut down.

When I attempt to update via app-store, it all looks normal, asks me if I want to reboot now or later - I choose now - ...and nothing happens. At all. I simply cant update the OS.

ALT-CMD-ESC doesn't work either.

I've already tried repairing permissions via Disk Utility - no difference.

It's a mid 2012 13" Macbook Air running 10.8 - I'm trying to update to 10.8.2.
I've done a reinstall of 10.8 via a image-file, but to no avail. Same problem.

It MIGHT have started during my tinkering with some settings in Onyx -(http://www.macupdate.com/app/mac/11582/onyx) but I can't say for sure. ... But the problem is still here even after reinstalling the OS.

Any suggestions apart from bringing it in to Apple or doing a complete CLEAN install of 10.8?

Any advice would be greatly appreciated!

 

[halledise]

don't quite know what the issue is, but one thing's for sure, it's also contained in your image file.

my suggestion - and I'm happy to stand corrected - would be to backup your home folder and do an erase and a fresh install of ML, then reinstall your Apps and finally drag over your files.

perhaps even letting iTunes and iPhoto import by themselves, rather than just dragging the contents of those folders directly into the new iTunes and Pictures folders.
it's a couple of hours process, but you end up with a very responsive Mac once again.

since 10.7, I've found it handy to have OS X installed on a usb stick - http://wp.me/ps4An-8kf

as well as Recovery Disk Assistant to make a separate stick to startup from to erase the HDD first - http://support.apple.com/kb/HT4848.