Start-RUN and type MSCONFIG. Now look at the autoexec.bat and config.sys tabs and uncheck the boxes that show himem.sys and XMS memory....close MSCONFIG, but don't reboot yet when prompted to do so.
Now go to Device Manager, and right click the Parent IDE controller (the Primary and Secondary IDE controllers are considered to be 'child' devices), choose Properties, and then choose REMOVE.
Once that is done, you can reboot the computer to see if Windows now corrects the problem.
my comp went crazy- i got a himem system missing-and himim sys has detected unreliable XMS memory at address 01671A28 XMS driver not installed- so i reinstalled windows 98se- all seems fine- went to system properties and theres a yellow thingy next to primary IDE controller (dual fifo) under the hard disk controllers- i had to reboot and each time i get a change boot sector or no- i hit no because thats the only way it will boot- how do i fix teh primary IDE controller? i hit the reinstall driver but cant figure out where to get the driver- im so lost... win 98se-