IBM Aptiva 2174 Hardware Maintenance Service page 56

Reset Resource Assignments Set this parameter to Yes to avoid IRQ
conflict when installing non-Plug and Play cards.
Before you install non-Plug and Play cards, set this parameter to Yes, exit
Setup and turn off the computer. This clears all resource assignments and
allows BIOS to reassign resources to all installed Plug and Play devices the
next time the system boots. After clearing the resource data, the parameter
resets to the default setting No.
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