Digital Camera USB storage

Greetings,
Currently I bought a Digital Camera and try to install the USB driver on my pc. It pop up an error msg and not allow to setup. The msg is “USB equipment operates with the driver installed as standard. You not need to install a driver”. When I connect my DC to the pc it can detech the model but cant read the content inside (SD card).
The USB driver disc is come with the DC.
Can anyone help me to solve this problem, if not I cant view the pic at the DC coz currently I dont have the SD card reader. Thank Q