Screen settings problem

Question

sir,
I have loaded 2 os 98 & xp . when i start the computer i have some osd settings problem in my computer. I have 15" crt samtron 56v monitor.
I've already chenged my HDD also. Then I fall my monitor problem. some days my monitor does not support so I also repaire that problem also. Now my computer is OK but OSD settings problem be hanged. So please give me a solution, & also pleased to you.........