Since the majority of the .dmp files seem to indicate a problem with your Video Card, I would start there.
Address potential driver corruption first. Use something like driver fusion to remove anything associated with your nVidia DISPLAY drivers.
Grab the latest (non-beta)driver from nVidia and do a custom install and select the Graphics Driver Only..... no 3d, physix, etc., for now.
If Blue screens still persist, grab some monitoring software and take a look at your system temps, paying particular attention to your GPU under load.... there are any number of graphics software like furmark or uengine out there you can use to load it up.
Additionally consider you Power Supply, make sure that it is up to snuff for delivering the...