@Kevin_Z Yes. of course. Still using the original adapter. The device was opened just 1 week prior. No abnormal behavior, except that it is not working at all. HARD RESET did not work. This is used...

Only power light is on. WiFi light is never on, so is internet light, never on. Tried resetting, pressing WPS/WiFi on/off button and everything else. It is a new router, worked for a week, but now...