Start with having a looking in,
and see if ASACPI.sys is still there, if it is Windows likely re-installed it from the DriverStore folder,
On mine the folder it is in is called,
with yours being an older version it may have a slightly different name; should still have the atk, but the 2000 may be different (and the number/letter combo definitely will).
If that is what happened then uninstall again through Device Manager then go to the FileRepository folder and manually delete the atk folder. Windows won't let you delete it without changing the permissions on the folder, so you can do it manually or use this (if you haven't added it already), Take Ownership Shortcut
to add it to the context menu. Only take ownership of the atk folder and not the whole FileRepository folder.
Hopefully that should stop the error, but if it doesn't then it may take going into the registry an manually searching for and deleting any entries found for ATK0100.