I have a Dell M6400 laptop and an external Dell 24" monitor. When I connect my Dell M6400 laptop laptop to a DELL monitor, initially the Dell will show the "Resuming Windows" but then immediately goes into "Power Save Mode". Whenever i try to open the monitor, i keep getting the message Entering power save mode, press Pc button or any key, but it doesn't work. Can any body tell me that why does my external monitor enters in to power save mode? How do i turn power save mode off? Does any body knows about it? Kindly help me out to resolve the above issue.