If connecting via USB, try other ports. Verify the port works by trying another USB device. If the ports check out properly, uninstall and reinstall the driver for the camera. If still no go, try the camera in another PC to verify that it works. You didn't give much in the way of details so I'll leave it at that. There is also system restore if you can point to a time this worked properly if the camera checks out.
Hiii...my operating system is (windows 7-64 bits-)...when I connect my camera to my hp PC, it does not recognize the camera although it used to do...on checking I get an indication that it is an Error 037....how can I fix this problem please?...thank you.