I've always used wireless networking in my home for every computer except the one I play wow with (hardwired of course). A few weeks ago, the wireless just randomly stopped working. I tried all the basic stuff.. power cycling, resetting to factory settings, etc. I finally went and bought a new router thinking that maybe it was just the wireless (wired was working perfect still). I bought the Linksys E3000 for $180ish bucks. Brought it home, it did the same thing. Spent 1.5 hrs on the phone with tech support and they had no idea what was happening. They told me it must just be a defective router and to take it back to the store. I took it back, got a Netgear router. Same thing happens, call tech support, they run me through all these tweaks and changes. Nothing works, they say the same thing about being defective. I take it back again and decide to get a router that is exactly like the original one that I had. A linksys WRT310N. I bring it home, same thing. I did actually get my iphone to connect to it but there was no connection to the internet.
I also called my ISP to make sure that my connection was strong and that my modem didn't have any issues. Everything is perfect with them. At this point, nothing will connect to it and if it does, there is no connection. Keep in mind when replying that I've already spent hours on the phone with tech support and they had me do the majority of the basic stuff as well as a bit of in-depth troubleshooting. It feels to me like there is an issue that isn't related to the router itself but I have no idea what it could even be.
My main computer (that is hardwired) is a Win 7 desktop. The additional computer is a Win Vista Desktop. I am also trying to connect 2 iPhone 4s and a X-box 360 (Halo: Reach one, btw, it's awesome).
Oh, also, before anyone asks... no there isn't a microwave or speakers near the router nor is there any kind of cordless phone in my house. Everything is still the same in my household as far as the environment is concerned and I can't imagine where any type of signal interruption would come from.