Drivers Not Working For Dell Webcam?

I have just got a new laptop for my mum a dell Inspiron 15-3520 with windows 8 on frist think i did was put windows 7 on, everythink when well apart from the webcam does not work now. Got the drivers and software from the dell website and when i open the dell webcam software it says that the webcam is not supported. In the device manager it just cums up with intergrated cam and does not let me upgrade drivers or change them.