I have been having issues with the wifi in my new flat since moving in (whole block of 7 shares internet). The latest is it was working fine for a while and then my girlfriend turned her laptop on and connected. now wifi doesnt work on any device (connects but doesnt give internet) and ethernet works fine on my laptop but not on hers. We are both windows 8 (mine is 8.1) and really need this sorted, please help!