|Not sure what made you think deleting files would speed things up, it usually stops things working. There will also be valid registry entries for those files that have now been left behind which could cause complications.|
Follow 1 to 4 here:
If that doesn't help then system restore might help (to a date before you deleted files):
(that assumes it wasn't the restore files you deleted)
Tip for the future, you don't just delete files (unless they are your own) but you do a proper program uninstall from Control Panel > Programs & Features.
Always pop back and let us know the outcome - thanks