I'm using photoshop elements 12 on my Apple macbook pro (OS X Yosemite 10.10), when i use certain features in photoshop like perfect portrait and some other features, the computer freezes. Can anyone assist?
Applications cannot cause the entire computer to freeze, lockup, reboot, or shutdown. Those actions can only be caused by bugs in the OS, bugs in a low level driver, or defective hardware.
By far the most common cause is defective RAM chips. But we've also seen it caused by bad motherboards, bad power supplies, bad video cards, and occasionally bad CPUs. We have seen a few OS and driver bugs cause similar issues - but those are usually very widespread (Everyone encounters them), and get fixed quickly by the OS or driver vendor.