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 PCIScope installation manually, then you have to:

1. Shut down PCIScope.EXE (if open).
2. Remove the entire registry tree:
   HKEY_LOCAL_MACHINE\Software\APSoft\PCIScope
3. Remove the entire registry tree:
   HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Uninstall\PCIScope
4. Remove the entire registry tree:
   HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\PSKD
5. Remove the entire registry tree:
   HKEY_CLASSES_ROOT\.bpd
   HKEY_CLASSES_ROOT\PCIScope.Application
   HKEY_CLASSES_ROOT\PCIScope.Application.1
   HKEY_CLASSES_ROOT\PCIScope.snapshot
   HKEY_CLASSES_ROOT\CLSID\{D4E7E65A-DE6D-4FBD-961D-BEB1CF2923B0}
   HKEY_CLASSES_ROOT\Typelib\{81923875-E915-4ACA-995A-4D8ADE33241B}
   HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\MenuOrder\Start Menu\Programs\PCIScope (if exist)
   HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\App Paths\pciscope.exe
6. Reboot computer
7. Delete PCIScope installation directory with all it's contents (i.e. C:\Program Files\APSoft\PCIScope)