I do a volunteer thing every other Friday ansering phones for a hotline. Between calls I can do what I want and I sometimes web surf. Fora long time I was unable to use my HP laptop. then i discovered that the reason was that the wifi chipset in the HP was incompatible with routers of a certain make and firmware. When they updated the firmware my problem went away. See if there is a firmware update for your modem. You have nothing to lose.