My list of things.
It looks like you have both power leads hooked up to the MB - good
The graphics card looks like it may not be seated properly - try removing it and reseating it.
Does that MB not have a floppy connection??
Your case speaker is not hooked up from what I can tell, it should go on the connector just above the other case connection, and have to leads coming from the MB.
Go through and recheck your case connection, make sure you have the power led and power switch in the right places.
That graphics card not aligning with the screw holes it what bothers me the most though.