How to uninstall ACPIScope manually?
WE DO NOT RECOMMEND REMOVING IRPTrace MANUALLY EXCEPT IF YOUR UNINSTALL INFO IS CORRUPTED!

IMPORTANT: This article contains information about modifying the registry. Before you modify the registry, make sure to back it up and make sure that you understand how to restore the registry if a problem occurs. For information about how to back up, restore, and edit the registry, see the Microsoft Knowledge Base.

If you really need removing ACPIScope installation manually, then you have to:

  1. Shut down ACPISCOP.EXE (if open).
  2. Remove the entire registry tree:
    HKEY_LOCAL_MACHINE\Software\APSoft\ACPIScope
    HKEY_LOCAL_MACHINE\Software\APSoft\ACPIScop
  3. Remove the entire registry tree:
    HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Uninstall\ACPIScope
  4. Remove the entire registry tree:
    HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\HWA
  5. Remove the entire registry tree:
    HKEY_CLASSES_ROOT\.aml
    HKEY_CLASSES_ROOT\ACPI.tblset
    HKEY_CLASSES_ROOT\ACPIScope.amlfile
    HKEY_CLASSES_ROOT\ACPIScope.tblset
    HKEY_CLASSES_ROOT\ACPIScope.tblset
    HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\App Paths\acpiscop.exe
    HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\MenuOrder\Start Menu\Programs\ACPIScope (if exist)
  6. Reboot computer
  7. Delete ACPIScope installation directory with all it's contents (i.e. C:\Program Files\APSoft\ACPIScope)