Hello Chris, I'm Quinn, and I'm happy to help.
To completely remove iTunes and related Apple software from your PC, please follow these steps:
- Click Start, search for 'Control Panel', and open it. Then go to 'Programs and Features'.
- Uninstall the following items by selecting each and clicking Uninstall at the top:
- iTunes
- Apple Software Update
- Bonjour
- Apple Mobile Device Support
- Apple Application Support (32-bit)
- Apple Application Support (64-bit)
- Restart your PC after uninstalling all the items.
After this, you should be able to reinstall iTunes without problems. Let me know if you need more help!