I'm using an HP 2000 notebook with Windows 8. I was playing an online game when I noticed my connection went off. I have the Wi-Fi automatically set to connect whenever I go on, so I found that odd. I noticed that my sister's laptop (she has the same one as me) didn't go off, but instead only mine's. So I check my phone (I have an iPhone 4S), and I notice that the Wi-Fi is off there too. I try reconnecting on that too, but it says it's unable to.
I thought it best to ask my brother because I know he's better at computers than me and I think he did something… He told me he didn't do anything and that he had no idea what I was talking about… I just find it really suspicious. I know he likes to play his Xbox on Live and maybe he did that so I wouldn't interrupt his gaming because too much Wi-Fi being used can affect the game in making it lag, etc. But I don't know.
My question is how can I tell if someone is taking out my ability to use my house Wi-Fi, and if someone is, how do I connect back to it? Please help me out. I'm not really familiar with most computer terms or anything to do with Wi-Fi. I know how to get the router's password and things like that, but nothing too complex.
Any help would be appreciated.