The room in the back of the house couldn't get the signal. This particular room was originally a backyard patio which was converted into an office. It happens to be behind the kitchen. The modem is in the living room at the opposite end of the house. I guess there are too many obstacles. I can get the signal if I put my laptop in front of the door. But darn, it is awkward to put my desk in the middle of the door, isn't it? I want to use this room as an office because it has the best view. I can see Russia from there.