sounds like you've got that useless ACPI sh(t enabled.
disable acpi in your bios and see if it goes away.....
another thing you might try is go out and find microsoft's
shutdown fix or something like that.....some conflict with
via chipsets and win98se (lot of info on epox's site under faq)
barring all that you might just throw it in the trash or give it
to goodwill.
Please consult a medical professional before taking this advice