Hi,
Welcome to Microsoft answers.
What exactly happens when you connect the Quickcam?
Do you get any error message?
I suggest you to check in device manager if the webcam is detected or does it state unknow device in the device manager.
There are no drivers released by Logitech Quickcam Pro 4000 for Windows 7, I suggest you to download the latest drivers from manufacturer’s website and install it in Windows Vista compatibility mode and check if it helps. Make sure that the Security software is disabled while downloading the drivers.
Here is the link for drivers.
http://www.logitech.com/index.cfm/435/269&hub=1&cl=us,en
Follow these steps to install the driver in compatibility mode:
Open the Program Compatibility troubleshooter by clicking the Start button, and then clicking Control Panel. In the search box, type troubleshooter, and then click Troubleshooting. Under Programs, click Run programs made for previous versions of Windows.
Logitech quickcam pro camera drivers windows 7 free download - Logitech QuickCam Pro Camera Drivers, Logitech QuickCam Pro 5000, Microsoft DirectX Drivers (Windows 95). Windows 7 Has A Driver For QuickCam Pro 4000. I have a fresh installed Windows 7. When I plugged in the QuickCam Pro 4000, it worked, at lease the video part worked.
Logitech Quickcam Software Windows 10
Follow the instructions in the troubleshooter.
If you cannot install a program, insert the installation disc for the program and, using the troubleshooter, browse to the program's setup file, usually called Setup.exe, Install.exe, or something similar. The troubleshooter is not designed to work on programs that have an .msi file name extension.
Please respond back for the status on the issue and let us know if you have any issues.
Logitech Quickcam Pro 4000 Driver Windows 7
Thanks and Regards,
Azam – Microsoft Support.