What sort of monitor are you using? I had problems with my TFT monitor in that some Linux distributions I've tried wouldn't let me install in graphical mode although I'm guessing it's an outside chance of it being your monitor...
A quick search and I found
this. I get the impression the a7n8x deluxe motherboard should be working (I'm using a non-deluxe version in my computer - works fine
).
There's some info on this site (
here) that may be interesting. Sorry I can't be much more helpful.
-Chris