My Latitude E6540 laptop keeps losing my wifi connection. I am running Windows 10. It will work fine for a week or 2 and then it starts dropping the wifi signal. Soon I cannot connect at all. I unplug and reset the router and the modem but it does not help. I do not think it is the router or modem because there are 3 other laptops connected and they never lose their connection. Anyway after an hour or two I will finally start to get a signal, but it will fade in and out. Restarting the computer does nothing to help.