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Description

How to activate detection of ACPI in Windows 98 ?

Solution

Run Regedit
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\Current Version\Detect
Add a new key (DWORD) called "ACPIOption".
1 - ACPI activated
2 - APM + PnP activated

Run Add Hardware Wizard and Windows98 will detect your ACPI BIOS!