I am working on a Lenovo Thinkpad with Windows 7 and using an Insignia HDMI to VGA adapter to connect to an ASUS VH238 monitor (as a second display). I've had no issues prior to today, when suddenly I am getting a message on the ASUS that reads "HDMI No Signal". The laptop is detecting the 2nd monitor, so I don't believe to be a connection issue there. Everything is plugged in. Also switched monitors and VGA adapters to ensure it's not an issue with either of those. Went into Display settings and they are set to extend to both displays. I am completely stumped. Have also tried re-starting computer.