Hi all, I recently purchased a monitor (model:AOC e2450Swh 23.6" 24 inch LCD LED) computer screen to work with my Macbook Air (Mac OSX 10.7.5) I am using the adapter with an HDMI cable but the monitor reads 'no signal'. I have tried all input settings on the monitor and my mac won't detect the display. I have tried every setting in the display settings, but still nothing. I went to the mac store online and downloaded the firmware and software updates, then when I tried to install it it said that 'This software is not supported on your system'. I should also mention that I have used this computer and cable configuation on another monitor and it works fine. I am really really stuck, can anyone help??? Thanks in advance.