hey guys, I am a bit stuck. I set up my room and wanted to use my macbook pro with a hp w1907. I got the usual cables that are needed and then hooked it up and it worked, I was using my mac on the monitor. so I moved the monitor to suit my needs and unplugged the cables and once they where in the right spot I plugged it all back in and now its just not working. I know it works though because when i plug the cable into my mac it turns blue for a second like it does when there is a external monitor plugged in. also the tab arrangement doesn't come up either. like I said i have had it working before and I dont understand whats happened. thanks for your responses.