Hello, there is such a problem I have a Huawei b315 Router and everything was Ok, later I did not use it for a long time and now I wanted to use it, I inserted the card into the router and turned it on and here there is a problem because I do not have Wifi and the router does not light up the WiFi LED . I thought that the diode could burn and the signal could be but there is nothing I also tried to reset the router probably three times or nothing, I have no more ideas will you help me? Still in the margins I connected it to a laptop and made router configurations and it also did not help