Hi all, I have just purchased the Samsung S23C350H monitor that has a resolution of 1920 x 1080px. I have connected it to my macbook pro mid-2009 through HDMI (I bought the Mini Display port to HDMI adaptor) but I can't use the monitor at its full resolution. When I select 1080px, the screen just turns on and off every second and is unusable (I cannot even access the menu on the screen). The highest resolution I can use is only 720px, which is useless. Any idea how to fix this? Many thanks in advance for the answers!