All true, but its behavior is still surprising. The board does support C3 chips. Thats usually enough for them to run. How long on a 95 watt board is another story.
ASROCK is an ASUS subsidiary and I have seen this on Asus boards. In those cases, it appeared to be a buggy bios. Yours may be as well. You could try an older bios, as long as there is one that supports that cpu revision. You may also try bumping the multiplier using a windows utility.
Just remember that if you do get it working, it may be too much power draw for that board.