Need a free program that cleans deleted files?

Download and run Revo Uninstaller demo. It is fully functional. If it recognizes the program in question, let it uninstall it. It does a very thorough job of uninstalling.

If this doesn't work, re-install the program then uninstall it properly using the Control Panel, Add and Remove Programs or Programs and Features dependant upon the version of Windows you are using.

In Windows, never delete programs to remove them. Uninstall them properly.

Generally....

CCleaner - Wikipedia, the free encyclopedia (very popular, safe, freeware/donate)

CCleaner supports the cleaning of temporary and unneeded files from certain ...

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If you properly uninstalled software at Control Panel > Add/Remove Programs or with their uninstaller in the Start > All Programs then it was indeed uninstalled properly. What you are most likely seeing in C-Disk > Program Files are empty zero content left over folders of the uninstalled software. A general term for left over remnants from software uninstalls is "orphans" which also refers to left over Windows Registry entries by the softwares which are safe to delete and are picked up by registry cleaners.

TIP: With clean up utilities with settings to Delete All Zero Content Folders can delete a folder you did not intend to such as a currently empty Windows Logs folder. It is better to manually delete these as you have been observing. Warning - if you make a mistake deleting these folders or especially registry entries you can render Windows/Softwares inoperable. You need know what you are doing. Basically a mistaken software folder or registry key deletion renders it in operable and forces generally a manual deletion of all as the uninstaller will no longer function for it. Sometimes reinstalling the software will over write all and then can be safely uninstalled as normal. However, if it is a mistake with Windows files - well the computer may never reboot again until fixed.

You can install Microsoft free Windows Defender - an antispyware program and has "Software Explorer" in it that sometimes will delete these left over remnants of uninstalled softwares safely. Install Windows Defender and go to Start > Control Panel > Software Explorer and click it to open and look for the unwanted software there for complete uninstall.

The dangers mentioned in clean up utilities for zero content folders was stated. Better to do it manually to avoid mistaken deletions . Manually, if you uninstalled ABC Software fantasy example, you can perform > Search for all files by its name and then also in Windows Registry. If you are absolutely sure at what you are looking at with no doubts - these left over remnant orphans from the sloppy uninstall are then safe to delete. Be safe not sorry !

Never delete program files or even shortcuts! Always use the control panel, section software tu de-install your unwanted programs! If you have deleted them the wrong way, you have ti reinstall them first, and than de-install them in the right way, using control panel.

If you only delete program files, there will be all the entries in the windows-registry and a lot of files in windows-system directors still present and will litter your system.

There's no hope, you'll just have to replace the computer with one that actually works.