So I have Xfinity High Speed Wireless Internet. The router is right near my computer, however it is not wired. For some reason, every once in a while (sometimes it occurs hours later, sometimes it occurs after about 15 minutes) my Internet connection goes out. I'm still connected to it, it says "No Internet access". I'm not sure if this also has something to do with it, but my computer was just repaired with Geek Squad (had to be sent out and replace my laptop's screen).The thing is, only sometimes does the Internet go down for everyone in my household (only 2 computers including mine) and my other computer in my house (which is a desktop computer that runs on a wireless adapter) would sometimes be running perfectly fine, but my Internet would go out. I have no idea what is happening. Please help! It's getting on my nerves badly.