There is an issue with the 2 DVI ports of 6850. the 1st one is a DVI-I which supports a VGA to DVI adapter. The 2nd one is a DVI-D which does not support an adapter and you need to have a monitor with DVI cable output in order to make it work.
Ok Thank you. so do you think that putting my DVI monitor on the second slot would help rather than it being on the first? (Which it currently is)