"Power Save Mode" and diagnostic lights

[Ted the Poster 0]

My monitor says it's in "power save mode" and the diagnostic lights on my PC recently went to yellow-yellow-green-green. I was told this means there is something wrong with my memory modules, and to re-seed them. Well I did that and nothing changed. What else could be wrong? I've already checked the video card, and the only other thing I can think of is that the motherboard died.

[MrRant 0]

Does it POST?