I have recently upgraded my system with an Asus GeForce GTX 970 4GB STRIX Video Card
My build (+ 16GB memory, 1 SSD, 1 HDD)
Now whenever I run something more demanding the monitor loses the signal and the screen goes black requiring a hard reboot of the system. Though I can still hear the sound. My goto tests are the Unigine Heaven Benchmark and the Bioshock Infinite Benchmark with the highest video settings.
Is my GPU broken? I have updated to the latest Nvidia drivers using the GeForce Experience application. I have also updated the BIOS to the latest version and deleted all my old GPU drivers (previously had a AMD Radeon HD 6950) using Display Driver Uninstaller.
Is it the PSU (Corsair Enthusiast 650W 80+ Certified ATX Power Supply) that can't handle the GPU? If so, what should I get instead?