Hello everyone. I have an HP compaq computer with a Samsung SyncMaster 740N monitor. I noticed yesterday the screen was doing something weird. It almost looked like the colors were moving. I turned my computer off and this morning I turn on my computer and the screen pops up for a second and then turns off. I turned my monitor off and on again. The screen comes up, but then turns black. What is the cause? Do I need to get a new monitor?