I run Windows 10 Pro, 64-bit, on an original installation by Dell on a new Precision 5810. I have repeatedly installed and uninstalled CCleaner 5.562.10 (free version), but it always installs as a Windows 7 64-bit version, and although the registry cleaner can read the registry errors, it cannot correct them. I would have no problem paying for the CCleaner Pro version if this would be certain to solve the incorrect-Windows-version / registry cleaner problem, but if it won't, I'd rather just find another program. I've always liked CCleaner, though, and would prefer it if anyone knows how to get it to correctly read that this is a Win 10 computer. (The only Win 7 compatible programs I run are Adobe CS 6 ones, and I have tried removing all Adobe files from the Windows 10 startup, then rebooting, then reinstalling CCleaner, but that didn't make any difference.) Any ideas?