Not easy to say, one thing you can try(but do not blame me, if it does not work!
) , is to remove(or make a copy of the files to be able to restore them, if it does not work!) some files out of the Windows directory: hh.exe hhctrl.ocx hhsetup.dll and itss.dll. Than start the hhupd.exe again.
But do it ONLY if you know what you are doing, and understand what i wanted to say! Thats not easy, i know!