Hi there,
As I understand that you are facing issue with Camera not working after installing Windows 7
So please follow the following:
>Update USB3.0 driver
>Then you’ll see the Imaging device (Lenovo Easy Camera) installation process will be going in the Windows notification area.
>Once it is done restart & then tries to install Lenovo Camera driver.
For more info you can go through this link which is made available by Lenovo
I hope the above information helps.