In particular, the computer no longer able to boot. The cause is an error on the video driver that occurs when applications are installed that capture video or still use the camera on your computer .
To solve the problem, Apple released OS X Yosemite 10.10.3 Supplemental Update 1.0 that recommend everyone to install.
Download From Here:
OS X Yosemite 10.10.3 Supplemental Update