memory ration problem

[gavdrich]

Hi I have had my mobo (asus p4s533) set at 159 fsb with a memory ratio of 4:5 I decided to push the fsb up abit more so set my ratio to 1:1 so the memory is not running so fast. before I uped the fsb i tryed statrting my computer and it loaded fine until windows begain to open then just got black screen.

Any ideas put ratio back comp runs fine

please help.