Hello. I have one WIFI card which is working when it wants to, and how it wants to. I don’t know where should I search for the problem because I got two more cards like this one currently operational and without any problem regarding signal and everything else. Anyway, I must resolve this because I don’t want to loose signal without control. Any advice is welcome.
You must tell us more about WIFI card brand we are talking about. Anyway, if you are sure that other machines are the same as the WIFI products too, then I can sat that you have faulty WIFI card present in your home network. Or there is some kind of threat in the machine you are using. Reinstall the drivers again, maybe that will help.