I connect internet using USB cable instead of ethernet. All of a sudden my USB link in modem has stopped glowing and i'm unable to connect to internet.. But if in connect the usb cable in my laptop, the usb link is perfectly glowing and i can connect to internet.. But all my usb slots works perfectly when i connect pen drives.. So wats the problem..? Why is the usb link not glowing in my pc alone.? FYI: my computer runs on xp and laptop on vista. Also i tried with my friends laptop running on xp. It works perfectly..