Hi Kean19,
Welcome to the HP Forums! :smileyhappy:
I understand that your software isn't uninstalling completely.
I would try a level-three uninstall. Found in this guide. Fatal Error 'Error 1155. Not Found.' (MSI Error 1155) Displays During Software Installation in Windows XP.
If that doesn't work try Microsoft Fix It to uninstall.
Hope this information helps, and have a good day. :smileyhappy: