new mother board doesn't except old hdd

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From: traumajohn (anonymous_at_discussions.microsoft.com)
Date: 09/04/04 

Date: Sat, 4 Sep 2004 09:18:00 -0700

hi i had an ECS k7s5a board with athlon xp 2100 all
components worked fine. i just installed an ecs 848-p-a p4
board and i get thru first boot and after the post boot
the pc restarts. i have double checked the jumpers and the
p4 processor is installed correctly. i can't locate faqs
or troubleshooters thru ecs website and ecs tech support
says that i have to reformat and reinstall due to old hdd
having a "HAL" not excepting the new board. can i do a
windows repair or do you think this sounds right. any
ideas can help i already backed up my data, but reinstall
is always a pain in the tuckis.
thanks john