For at least a year I was using a duel monitor setup with one monitor being a Sony 32" flat screen TV with a VGA input on the back. I'm running Windows 7 Pro. All of a sudden, for no apparent reason, the TV will no longer see the PC. I seem to have checked everything and can't figure out why the "input" button is greyed out on the TV. My PC actually recognizes the second monitor as "SONY TV" but the TV simply will not display the PC. Any help? I'm completely stuck.