Hello all having some issues with my Mac after Yosemite install. I posted in another thread but these are my issues 1. Booting up the computer takes forever and some have told me my boot screen is different than the normal Yosemite boot. 2. When I shut down the computer I get the "click" sound as if I forced shut down the machine via the physical power button 3. When trying to backup to my time capsule it just says preparing backup but won't ever actually backup. the biggest issue is not being able to back up to my TC. Any help would be greatly appreciated. Any way to reinstall Yosemite again?