BugCheck 116, {fffffa80077864e0, fffff88004cd27f8, 0, 2}
*** WARNING: Unable to verify timestamp for atikmdag.sys
*** ERROR: Module load completed but symbols could not be loaded for atikmdag.sys
Probably caused by : atikmdag.sys ( atikmdag+127f8 )
The problem is caused by your graphics driver. Run Display Driver Uninstaller(DDU)
Make sure you tick the Uninstall C:/AMD and C:/NIVIDA folders while you are in DDU when you are done running DDU install your graphics driver again and you should be good to go! This is the guide for DDU: http://www.sevenforums.com/tutorials/367109-display-driver-uninstaller-how-use.html
Remember to remove Catalyst and only install the graphics driver.