I funny enough, have the EXACT same problem. I also have to do a RMA, since no matter which ram i use, it won't post anything. It boots but then again no. Sry to hear about your problem tho. I've been struggling with MSI on their forum, but they never gave me a direct solution. Seems the RMA is the best choice, BUT, i'd recommend that you have something, to "prove" you've doen anything, in oder to make the supports "believe" you, if that should be the case.