Now i dont have the scan for hardware changes

I am desperately trying to get my camera back. first it came up with a error message. so I came here and someone said to uninstall the camera and restart the computer. I did that and now I cant find the camera icon in device manager. I came back here and asked again. I pretty much got the same reply but they said to go to action and "scan for hardware changes" I don't have that option and now im lost again. I don't get it because other than my firewall which ive since removed I have made zero changes to my computer and my camera was working 2 months ago and now its not. I don't know if there is an automatic update that I don't know about. but I went through the steps if it was updated and still nothing. it said if all else fails call the company that the camera belongs to, but I uninstalled so how am I supposed to know the name of it ?