Monitor problem

[infamous1618]

ive had a Gateway FPD2185W monitor for about 3 years now and hasnt had a problem. Today when i turned my computer on it would do the normal bright blue led light on the on off button but then go to a dim blue light and no picture would come up. When i turn my computer off nothing changes. I unplug the power cord from it and reconnect them and it does the same thing, even when i unplug the video cord from my computer. Any help please