Hi,
Can you check what the memory dump file is saying?
Download and run Free BlueScreenView
http://www.nirsoft.net/utils/blue_screen_view.html
In the File menu you can save the data as a text file and post inn your next answer. In the file menu there is also options to directly Google search for the Error and the Bug check string.
I should add that my CPU usage was regularly at 100% and it crashed a lot.
There is also another good free s/w which give you some hints directly what to search for:
WhoCrashed
http://www.resplendence.com/whocrashed
Remember to uncheck any third party s/w during installation..
Best regards from Sweden