Your Pi Camera should always be be connected as follows before boot up.
(full setup video here)
On first boot up enter this command immediately after login but before entering desktop, If you’re already in desktop open up LX Terminal from Accessories tab in start menu.
scroll down to camera hit enter and select enable, you now need to reboot:
Your RaspiCam is now enabled and ready to use, boot up – log in and lets have some fun.