Win 2000 keep restarting during upgrade

I am in the middle of upgrading from ME to 2000 Pro. When the upgrade process start to perform final tasks, at the step UPGRADES PROGRAM AND SYSTEM SETTING, the PC will restart without displaying any error message. It will start back at performing final tasks again, at the step INSTALLS START MENU ITEMS. It will register components, and then restart during the step UPGRADES PROGRAM AND SYSTEM SETTING. Only two steps after that are remaining: SAVES SETTINGS, REMOVES ANY TEMPORARY FILES USED.

There were programs that were incompatible with Windows 2000 on the computer which were reported by the Win 2000 upgrade process.

PC: Compaq Presario 5000

How do I complete this upgrade?