glary utility, like all registry cleaners, does not fix or replace missing registry files. It removes "unnecessary" files which do nothing to improve the registry. There is no reason to remove these files and doing so could damage the registry.
Trust me I know.
Problem solved, defective keyboard, delete key was stuck on.
Solution, new keyboard. took 5 minutes to install.
thanks for posting your fix...i had exactly the same problem and knew it wasn't virus or reg related as i'd done a factory reset....gave the delete button a whack (replacing the keyboard wasn't an option as it's a laptop) and hey presto! worked like a dream!