mountain lion won't install on macbook pro 3,1
We have a MacBook Pro version 3,1 computer with 10.6.8 running.
Plenty of disc left, 2 Gb RAM.
The install process goes in a loop, from app store to www.apple.com/osx to pushing the "upgrade" button and back to the app store page.
I'm not really a Mac kind of person, it can tell.
I ran a hard disk utility to check and correct permissions but it didn't help.
any thoughts out there? I just want to run lightroom 5 and it needs 10.7 or better.
Can I buy 10.7 someplace?
Thanks
Darrell
MacBook Pro, OS X Mountain Lion (10.8), upgrade fails