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Yup, that's the same one I found. Downloaded it and looking through it, I see no mention of any wireless device. In your first post, you said:
my computer is connected to my modem via an Ethernet cable and my modem to a wireless router via cable
I think I got off on a wild goose chase and you don't have Wireless internet, just a LAN connection via a Ethernet cable, so you can forget everything I've said about Wifi.
First I would think the connections would be reversed. Modem would be your connection to your ISP and would have one Ethernet port. It would have a Ethernet connection to your Wireless Router which normally has 4 Ethernet ports plus WiFi. Your computer would then be connected via Ethernet cable to one of the router ports.
Can you check and verify exactly how you are connected?
What is the make and full model number of the router? How long have you had it? How many things are connected to it via Ethernet cable?
Will wait for answers to my questions.
Can try removing the router from the path by connecting the computer directly to the modem for awhile but that depends on how things are connected now.
