I'm puzzled what else to suggest, *if* you genuinely went through all three steps in order, of
1. doing an Uninstall of the program "Camera Window" in
Programs and Features
2. and then restarted your computer, or rebooted it
3. and then reinstalled Camera Window afresh.
Is it perhaps, that your computer had a major update recently? If you installed Camera Window from a disk, it might be incompatible with, or not listed as compatible with, your current/updated Windows version.
Check the CD label for compatibility listed on it, with your current Windows version.
(Windows version can be read off of
System and Security
if you need to.)
Let me know, please, as to the above-mentioned details. I will advise you further when you get back to this question. Thanks.