A 0xc0000005 exception is an access denied error.  AV or Windows corruption are two common causes of this exception.
dwm is the Desktop Window Manager.  I believe the core messaging dll is for handling messages to windowed applications (an example of a message would be if you click a button that is considered a click message)  You may want to try and repair your windows install.
- Open an elevated command prompt and type chkdsk /f /r  when prompted to run it at next reboot press Y
- Then run from the same prompt DISM /Online /Cleanup-Image /RestoreHealth
- Reboot and let the check disk run which could take a while. 
See if those commands repair anything.