Greetings,
There are 2 revisions of this board.
Which rev do you have?
What specific gulftown or bloomfeld CPU do you have?
What BIOS rev are you running?
What memory are you using? How much, brand, model, spec?
How many slots are populated?
Is it QVL RAM?
I vaguely recall one of these boards having an issue with a combination of CPU and RAM, but I do not remember what. You may want to search a bit.