Hello. This is a problem that has happened to me a couple of times. Everyone else has connections in my house, even Wifi. I was cleaning my computer and when I was finished, it wasn't working. The thing is I wasn't touching anything besides my front computer fans. What could be the problem? When I go to device manager, it doesn't even show my router. All it shows is some NVidia nForce which doesn't have to do anything with my connection. One thing I do notice is that there is an "unknown device", which I think is my router. I can't update or do anything else because I have no connection. I even reinstalled my computer which usually fixed it. If anyone has advice, please help. Thanks!