She updated to the latest iOS (El Capitan), but found out after the fact the computer isnt able to run it properly and found she wasnt able to reinstall the old OS. I am very experienced with windows and all of its glory, but Apple has eluded me professionally. I have no idea how to fix something like this. I cant find any info online or a way to get an old iOS downloaded. So what she has done is wiped the HDD and now theres a 'safe mode' (is this just hard built into mac HDDs?) and that she was able to get to the internet. However she says it wont download any files, but it will load webpages. Need back up.