This happens mostly when I play video games, sometimes when I watch YouTube, and sometimes even when I'm basically idling. It just happened right now, as I'm typing this. My screen freezes, my audio loops (only on one program, which is strange), and on MSI Afterburner my GPU power goes down to about 10%. It unfreezes after about 3-50 seconds, and it's becoming more and more frequent. GPU temp stays at around 70 degrees Celsius (when I'm in-game). I am using a GTX 770. Can someone please give me a fix for this?