Thank you. The dump did not blame a driver - do you have a history of PSU issues before as well?
The next step,
Let us try finding any misbehaving driver
Enable Driver Verifier:
http://answers.microsoft.com/en-us/windows/wiki...
(Must create a Restore point before)
Upload the newer dumps when you get Driver_Verifier_detected_voilation.
Please note that the system might crash before you reach the desktop-if it does please let us know so that we can guide you to disable Verifier.