Hello I have recently bought a Nvidia GTX 650 Ti SSC Graphics card.. I have bought the appropriate psu for it also. It requires 400w minimum and That's what psu I bought. I'm sure I Have everything connected right from the psu to everything else. I'm pretty sure I'm supposed to plug a 6 - pin connector to the graphics card. But When I do that I get no signal (I am using a mini hdmi to hdmi from the graphics card to the monitor when I plug in the 6 pin connector) When i plug the 6 pin connector to the graphics card it seems to be running and the fans are spinning but there is simply no display. The only way to get back on the computer is to unplug the 6 pin connector and use hdmi on the default plug-ins on the back. I try to install drivers for the graphics card but Windows 8 Will not detect it. Oh and when I have the 6 pin uplugged the graphics card seems to be running but the fans are faster. I've tried connecting into the graphics card with the 6pin unplugged but still nothing. I've tried disabling fast boot and that didn't seem to work. Here's more info about my graphics card and computer------- computer: http://www.walmart.com/ip/Gateway-DX4380G-UW308-Small-Form-Factor-Desktop-PC-with-AMD-A6-5400K-Processor-6GB-Memory-1TB-Hard-Drive-and-Windows-8-Monitor-Not-Included/21777760
graphics card: Core Clock: 928
Memory Clock: 5400 MHz
Cuda Cores: 768
PCI-Express 3.0
2048MB GDDR5 128 Bit
Microsoft DirectX 11, NVIDIA PhysX Technology, NVIDIA 3D Vision Ready, NVIDIA CUDA Technology, PCI-Express 3.0 Support, OpenGL 4.3 Support
Nvidia SMX Engine, NVidia Adaptive Verticle Sync, Nvidia Surround, Support for Concurrent Displays, Nvidia PhysX, Nvidia 3D Vision Ready, Nvidia SLI Ready, Nvidia CUDA Technology
graphics card: Core Clock: 928
Memory Clock: 5400 MHz
Cuda Cores: 768
PCI-Express 3.0
2048MB GDDR5 128 Bit
Microsoft DirectX 11, NVIDIA PhysX Technology, NVIDIA 3D Vision Ready, NVIDIA CUDA Technology, PCI-Express 3.0 Support, OpenGL 4.3 Support
Nvidia SMX Engine, NVidia Adaptive Verticle Sync, Nvidia Surround, Support for Concurrent Displays, Nvidia PhysX, Nvidia 3D Vision Ready, Nvidia SLI Ready, Nvidia CUDA Technology