I have Win 7 64 bit PC. Was working fine from HDMI to TV. About a month ago I reset the PC to its origional factory settings, this was an option available to me on my HP machine. The PC is working fine now but I have lost my connect with the second monitor that is the TV. My graphics card is Nvidia GeForce GT 530. I updated the drivers without success. The graphics control panel recognises the TV as also does windows. but my tv screen is blank. I would most grateful for a solution to this problem...