I am not very tech savvy so please answer in lamans terms.
I recently updated my iMac to Mavericks via App Store. Few days later I was using iTunes and system kept playing up. Following day I couldn't get past the boot screen.
I just get the Apple logo and a loading sign.
Tried safe mode, but loading bar just disappears about 1/4 way through.
Tried recovery mode. Checked and reapired permission etc. Was saying a bunch of file routes could not be recognised but said repaired fine. Next try, same info displayed.
Tried reinstalling Mavericks but no luck. In fact on a couple of occasions it wouldn't let me do that, just kept saying try again.
Then did internet recover and tried to revert back to Lion but wouldn't allow it cos Mavericks is on system.
Now instead of Apple grey screen on load up I get the logo and some text comes up with a bunch of numbers and says something about "panic".
I do not have any of my OS on time machine as far as I am aware. Really would prefer not to erase my HD cos then it means losing a bunch of programmes. And dont yet have photos and that backed up onto Ext HD.