Did you install the D-Bracket 2? If so you don't NEED a post card. MSI motherboards have the ability to give ther own post codes, just pull out the book and read the lights.
My husband and I just went thru this last night with his. We were redoing his case and had to figure out what 8 beeps and the right set of lights were. Turns out his video card wasn't in properly. Liz