my Windows 7 pc randomly drops internet connection from time to time, i have no idea why. sometimes it shows that it cant find my router, other times it just gives me the error triangle but can still find my router. i have tried changing the wifi card, it is also the only thing in the house that loses connection. i have also disabled ipv6 and set a static ip. the problem occurs with firewall enabled and disabled, i just don't know whats left to try