Belkin f5d7010 adapter card gets some good reviews , are you useing the same card in the other lappie or dose it have a built in wireless roamer , i fine that built i roamer do a lot better ,
try moving the router to a higher position , maybe mounting it on the wall , it could be the position of the lappie some times i can move mine 1/2 inch and go from a poor signal to excellent ,
it could be something in the lappie its self causing the problem
get back with me and ill try to help





