Default [Q] [q] samsung usb drivers

I want to download CWM for my rooted Samsung Galaxy Core android version:4.1.2 official.
I download CWM and ODIN and Samsung USB Drivers for mobile phones on my Pc windows 7.
And when i try to install Drivers a message appears telling my that a device is connected please remove it and restart your Pc.
And the device isn`t connected and i disabled it from device manager and uninstalled it but it doesn`t disappear from the drivers list.
And the same proplem continue.
I wish anyone can help me plzzz