I decided to boost the memory and core clocks of my GTX 750ti to +350. My screens turned black for a few seconds, it showed a black login page, and then everything was "normal". I reopened Afterburner and it said my gpu had a voltage of 0, and a temp of 32 degrees F, along a core and memory clock of 0. Any changes don't get accepted, and Bitminter refuses to start mining.