Why can't my laptop recognize any apple device. Any solutions?

I tried connecting my ipod nano and my iphone 4 to my laptop but "device was not successfully installed" keeps on popping out.

I tried installing ITunes but "I tunes was not properly installed. If you wish to burn cd, please reinstall" keeps on popping up. I tried uninstalling then reinstalling but it still says that I tunes is not properly installed.

so far I got 2 problems at the moment. Thanks in advance.

btw. My laptop is windows 7 professional.

How simple can it be? First link in Google with your error message gives us:

http://support.apple.com/.../kb/ts3299

Well download a latest version of i-tunes and install it

Do you have to install the driver?

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