Parallels Desktop 6 For Mac
Yes, read OS X Yosemite: Revert to a previous OS X version. If you have not been using Time Machine you must create a backup first, followed by completely erasing the disk, followed by reinstalling its originally installed OS (presumably Lion), followed by migrating your information from the Time Machine backup.
You ought to determine the cause of the slowdowns and fix it though. Downgrading is not the solution to incompatible or garbage software. Removing or updating that software to a Yosemite compatible version is. I still have Macs that shipped with Lion and they're all enjoying greater performance and much greater battery life with Yosemite than any previous OS. It stands to reason whatever problem is affecting yours can be fixed.
Mar 24, 2015 10:12 AM
Parallels Desktop 6 For Mac Activation Key
Parallels Desktop 7 for Mac OS X Lion 10.7 is fully compatible with Mac OS X Lion 10.7 and has a free trial download. Parallels Desktop for Mac is the most tested, trusted and talked-about solution for running Windows applications on your Mac.