System restore or a recent system image available? If so then start with rolling back to the last one before you ran Driver
This isn't a Windows or ATI problem, but strictly a Driver Cleaner problem in that sometimes it can and does remove more than it should (and the same can happen with Driver Sweeper as well). The probelm is that sometime it gets a little overzealous in its cleaning and removes Windows default drivers
that are required in order for the manufacturers driver to install.
From what I have seen when it does happen is one of three things to fix it,
1. Run System Restore to the last point before the cleaner was run.
2. Same as above on with a system backup image.
3. If neither of the above are available or fail to fix the problem, a complete re-install of Windows to replace the missing system files that the cleaner removed.
Number 3 is one reason that I am one of those that will not recommend using any sort of driver cleaning program, as I have seen too many have to resort to it to get back to a working system (have seen it affect ATI and Nvidia, both video card and chipset drivers).