I recently went out and bought a new linksys ac1200 router to replace my 10 year old router. It works fine, my laptop and iPad connected to it fine. But when i connect to it with my desktop, a whole lot of problems occur. Sometimes after connecting, it shows limited access. Sometimes the browser will work fine, and then upon going to another site, it gives the error message "this web page is not available." (On chrome) I am using a tp-link USB wifi stick. I moved my desktop within 2 feet of the router, and my connection is fine. The Ethernet also works fine. Im not sure if it's a range problem because my pc would connect fine with the old router. I am also getting full bars.
Windows Network diagnostics gives me this:
-the default gateway is not available
-the connection between your access point, router, or cable modem and the Internet is broken