Camera driver for windows 7 vgn-sz483n

Try using the Vista drivers for it, but someone else I think already said that did not work. There are no Win7 drivers for this model, so your web cam won't work if the Vista drivers do not solve your issue.

Un-install the driver from the Hardware Management panel, then restart the computer. If windows 7 does not pick up the Webcam, go into the Hardware Management panel again, and see if you can search for new devices and automatically install them (search the internet)