I have a Philips 47PFS7109/12 TV and want to connect it to PC. My PC has NVIDIA Geforce GTX 560 graphics card with HDMI slot. When I connect HDMI cable to TV (tried HDMI 1-4) I can see my desktop on TV for a second, the it goes black for a second. This blinking loop repeats. I am sure HDMI cable is fine - I had success setting up my TV to display PC content once, but I have no idea how. Can you guide me how to debug and fix the issue?