Check cables (connection and type) and experiment with driver versions, it's where I would start.
hey ok i've narrowed it down a bit, ive tried a few stable video drivers and it doesnt seem to be the problem, but i am using d-sub connection through analog at the moment and its working perfectly fine.
Could it be the DVI cable? or something else?
The model is samsung 2333sw
to answer freezed1's question and also yehh thats exactly wat it does, sometimes in doesnt show bios and then waits for windows to load up and then picks up the signal
thanks heaps for your replies