There's no such thing as an "Alford conviction" just "Alford pleas." Once convicted, you're as convicted as you would be if you plead guilty or not guilty.
Further, there's no such thing as a 2255 motion on a state conviction. 2255 is a federal procedure.
I suspect you are in the US given the "codewords" but we need to know what state you're talking about and what sort of conviction (and indeed whether this was in state or federal court).