memory dump issues

How can I fix memory dump issue with win98, win2k and winXP. I have tried to upgrade from win98 to win2k as well as to Win XP pro, both gave me memory dump and asked me to check BIOS setup; such as memory shadow to disable. I did disable the memory shadowing and still did not solve the memory dump problem. The motherboard is SOYO with AWARD BIOS, type of BIOS is sy-5eam+ setting. I have downloaded BIOS update for this motherboard and still did not work after upgrade.
I do thank you for an answer if I can get.
zalemu
E-mail: zalemu2us@yahoo.com