Trying to setup media connect and it says the dongle is not plugged in. It is. I took it out, restarted, etc. Nothing

For the time being, TV is hard wired for Netflix because wireless network will not work.

Then I went to see if I could update software to possibly fix all of this and when I went to check through the network it said it was not a valid file.

I'm sort of lost. Any help would be appreciated.