So I just gota new labtop and it connects fine to my moms Linksys wirless router. I go to my boyfriends and he has the same Linksys routerand internet provier as my mom, and the signal is great, but I loose connection every couple of minutes and when it is connected it is very slow... It connects fine everywhere else (school, starbucks, etc.) So I know it must be a setting on my boyfriends computer or something of the sort.. I'm just not sure how to fix it.. I've tried unplugging the router and the internet modem and restarting everything and it doesn't seem to work... any suggestions??

Check this slow wireless network speed article, there are some external factors or configuration can affect wireless performance.